Question

What is the solution of this equation? 7y -4 = 9y +13 -4y

Answer 1

y = 8.5

Explanation:

7y - 4 = 9y +13 - 4y

First arrange to combine like terms.

7y - 4 = 9y - 4y + 13

7y - 4 = 5y + 13 Subtract 5y from each side

7y - 5y - 4 = 5y - 5y + 13

7y - 5y - 4 = 13

2y - 4 = 13 Add 4 to each side

2y - 4 + 4 = 13 + 4

2y = 13 + 4

2y = 17 Divide each side by 2

2y/2 = 17/2

y = 17/2 or 8
`(1)/(2)` or 8.5