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Solve the linear system using substitution. y-5=x, 4x-y=9

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Solve the linear system using substitution.

system-of-equations
solving-linear-equations
substitution-method

asked Mar 1, 2014 in ALGEBRA 2 by skylar Apprentice

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1 Answer

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Substitution method

Given equations y-5 = x ---> (1)

4x-y = 9 ---> (2)

From (1) substitute the x value in (2).

4(y-5)-y = 9

4y-20-y = 9

3y-20 = 9

Add 20 to each side.

3y = 29

y = 29/3

Substitute the y value in (1).

29/3-5 = x

x = 14/3

Solution x = 14/3 and y = 29/3.

answered Mar 1, 2014 by david Expert

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