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Question

Each pair of equations is equivalent. What was done to the first equation to get the second one?          

 

(A.)

 

4y/7 =3

 

                                                                             4y=21

 

 

 

(B).

 

5x = 30

 

x - 4 = 26

Answer 1

(A.)

4y/7 =3

Multiply each side by 7

4y/7 * 7 = 3 * 7

cancel common terms

4y = 21

 

(A.)

5x = 30

Subtract 4 from each side

5x - 4 = 30 - 4

5x - 4 = 26