Question

7 = 5y - 13 - y. Solve for y.

Answer 1

7 = 5y - 13 - y

Re-arrange

7 = 5y - y - 13

7 = 4y - 13

add 13 to both-side of the equation

7 + 13 = 4y - 13 + 13

20 = 4y

divide both-side of the equation by 4

20/4 = 4y/4

5 = y

y= 5