7=5y-13-y

Solution

7 = 5 y - 13 - y

y = 5

Solution steps

7 = 5 y - 13 - y

Switch sides

5 y - 13 - y = 7

Group like terms

5 y - y - 13 = 7

Add similar elements:

5 y - y = 4 y

4 y - 13 = 7

Move

13

to the right side

4 y = 20

Divide both sides by

4

y = 5

1.5 (3 y + 2) - y = 2 (8 y - 6)

\frac{3}{5} = \frac{x}{35}

4 x - 5 = 7 x

\frac{1}{4} (x - 2) + 4 = 12

15 (3 x - 1) - 7 (x - 1) = 2 (1 + 9 x)