12-8y=15-7y

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Solution for 12-8y=15-7y equation:


Simplifying
12 + -8y = 15 + -7y

Solving
12 + -8y = 15 + -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.
12 + -8y + 7y = 15 + -7y + 7y

Combine like terms: -8y + 7y = -1y
12 + -1y = 15 + -7y + 7y

Combine like terms: -7y + 7y = 0
12 + -1y = 15 + 0
12 + -1y = 15

Add '-12' to each side of the equation.
12 + -12 + -1y = 15 + -12

Combine like terms: 12 + -12 = 0
0 + -1y = 15 + -12
-1y = 15 + -12

Combine like terms: 15 + -12 = 3
-1y = 3

Divide each side by '-1'.
y = -3

Simplifying
y = -3

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