Question

Solve: 5y - 21 = 19 - 3y

y = __

Answer 1

y=5

Explanation:

5y - 21 = 19 - 3y

+21. +21

5y=40-3y

+3y +3y

8y=40

divide 40 by 8

40/8=5

Answer 2

5

Explanation:

5y - 21 = 19 - 3y

Add 3y on both sides

5y + 3y - 21 = 19

8y - 21 = 19

Add 21 on both sides

8y = 19 + 21

8y = 40

Divide 8 on both sides

y = 40/8

y = 5