Welcome :: Homework Help and Answers :: Mathskey.com

Q&A
Unanswered
Categories
Users
Ask a Question

Welcome to Mathskey.com Question & Answers Community. Ask any math/science homework question and receive answers from other members of the community.

Q&A Categories
BASIC MATH (93)
PRE-ALGEBRA (441)
ALGEBRA 1 (2,220)
GEOMETRY (864)
ALGEBRA 2 (2,751)
TRIGONOMETRY (1,187)
PRECALCULUS (1,903)
CALCULUS (2,802)
STATISTICS (129)
PHYSICS (659)
CHEMISTRY (137)
MECHANICAL ENGINEERING (64)
ELECTRICAL ENGINEERING (207)
Winplot Tutorials (2)

Most popular tags

solving-equations system-of-equations functions math slope-intercept-form physics homework-help trigonometric-identities integration limits substitution-method calculus

13,459 questions

17,854 answers

1,446 comments

808,012 users

solve by substitution x - 3y= -15 x=-3

0 votes

show steps

substitution-method

asked Feb 11, 2014 in ALGEBRA 2 by skylar Apprentice

Share this question

Google+ Facebook Twitter LinkedIn Reddit

Please log in or register to add a comment.

Please log in or register to answer this question.

1 Answer

0 votes

Given equation x-3y = -15

Substitute the value x = -3 in above equation.

-3-3y = -15

Add 3 to each side.

-3+3-3y = -15+3

-3y = -12

Divide to each side by negitive 3.

-3y/-3 = -12/-3

y = 4

answered Feb 12, 2014 by friend Mentor

Please log in or register to add a comment.

Related questions

solve the system of equations by substitution. say so. -x -3y = -5; y= 7x-13

asked Aug 22, 2015 in ALGEBRA 2 by anonymous

solve-system-of-equations
substitution-method
consistent-inconsistent

solve the system by substitution. Give the x - value of the solution. y-4x=0 and x=-15+4y

asked Dec 2, 2013 in ALGEBRA 1 by andrew Scholar

system-of-equations
substitution-method

solve the linear stystem by substitution 5x-3y=7 and x-2y=12

asked Feb 17, 2014 in ALGEBRA 1 by dkinz Apprentice

system-of-equations
substitution-method

solve this system of equations by using the substitution method 5x-3y=-11 (1) and 3x+22y=1 (2)

asked Mar 5, 2014 in ALGEBRA 2 by mathgirl Apprentice

system-of-equations
solving-equations
substitution-method
elimination-method

2x - 3y = 12 and 3x + 4y = 15 using substitution and elimination

asked Mar 12, 2014 in ALGEBRA 2 by skylar Apprentice

system-of-equations
solving-equations
substitution-method
elimination-method

8x - y + z = -9, 2x + 2y - 3z = -22 and x - 3y + 2z = 15 solve for an ordered tripple

asked Mar 6, 2014 in ALGEBRA 2 by harvy0496 Apprentice

system-of-equations
solving-equations
elimination-method
substitution-method

-2x-3y=-7 and -29=5y-3x equation by substitution.

asked Feb 17, 2014 in ALGEBRA 2 by mathgirl Apprentice

system-of-equations
substitution-method

solve (x+2)^2+7y^2=5 and x^2+4x-y=6 by substitution or elimination.

asked Nov 28, 2013 in ALGEBRA 2 by homeworkhelp Mentor

elimination-method
substitution-method
system-of-equations

solve and check 2x+y=9, x-2z=-3, and 2y+3z=15

asked Mar 10, 2014 in ALGEBRA 2 by angel12 Scholar

system-of-equations
solving-equations
elimination-method
substitution-method

substitution if 2x-3y=-24 and x+6y=18

asked Mar 11, 2014 in ALGEBRA 2 by rockstar Apprentice

system-of-equations
solving-equations
substitution-method

What is x-y+=2 and 4x-3y=11 using substitution method.

asked Mar 10, 2014 in ALGEBRA 2 by futai Scholar

system-of-equations
solving-equations
substitution-method

solve.1)y=5y+1 and -2y+10=3. 2)-x+2y=3 and 3x-6y=-9. 3) x+3y=5 and 5x+6y=-2.

asked Mar 11, 2014 in ALGEBRA 2 by homeworkhelp Mentor

system-of-equations
solving-equations
substitution-method
elimination-method

4x+4y=12 and x-7y=-21 solve by substitution

asked Feb 17, 2014 in ALGEBRA 1 by angel12 Scholar

system-of-equations
substitution-method

Solve equations by substitution

asked Oct 20, 2018 in ALGEBRA 2 by anonymous

system-of-equations
substitution-method
two-variables

Solve by the method of your choice (addition or substitution)

asked Mar 10, 2014 in ALGEBRA 2 by abstain12 Apprentice

system-of-equations
solving-equations
elimination-method
substitution-method

Solve the system by method of choice (addition or substitution)

asked Mar 10, 2014 in ALGEBRA 2 by harvy0496 Apprentice

system-of-equations
solving-equations
substitution-method
elimination-method

solve each system by substitution - 2x + 2y = 2, -4x + 4y = 12

asked Mar 10, 2014 in ALGEBRA 2 by homeworkhelp Mentor

system-of-equations
substitution-method
solving-equations

solve it by substitution method:- 5x - 6y=-9 & 3x + 4y= 25

asked Mar 5, 2014 in ALGEBRA 2 by linda Scholar

system-of-equations
substitution-method
solving-equations

-9x+y=71, 6x+12y=54 Solve by substitution

asked Feb 17, 2014 in ALGEBRA 2 by homeworkhelp Mentor

system-of-equations
substitution-method

Solve the system by substitution.

asked Dec 29, 2012 in ALGEBRA 2 by linda Scholar

system-of-equations
substitution-method

Copyright © 2024 MATHSKEY. All Rights Reserved. Sitemap|Terms Of Use|Disclaimer|Contact Us|FAQ

...