-13=8-7y

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Solution for -13=8-7y equation:


Simplifying
-13 = 8 + -7y

Solving
-13 = 8 + -7y

Solving for variable 'y'.

Move all terms containing y to the left, all other terms to the right.

Add '7y' to each side of the equation.
-13 + 7y = 8 + -7y + 7y

Combine like terms: -7y + 7y = 0
-13 + 7y = 8 + 0
-13 + 7y = 8

Add '13' to each side of the equation.
-13 + 13 + 7y = 8 + 13

Combine like terms: -13 + 13 = 0
0 + 7y = 8 + 13
7y = 8 + 13

Combine like terms: 8 + 13 = 21
7y = 21

Divide each side by '7'.
y = 3

Simplifying
y = 3

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