15-12=9y-10-8y

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Solution for 15-12=9y-10-8y equation:


Simplifying
15 + -12 = 9y + -10 + -8y

Combine like terms: 15 + -12 = 3
3 = 9y + -10 + -8y

Reorder the terms:
3 = -10 + 9y + -8y

Combine like terms: 9y + -8y = 1y
3 = -10 + 1y

Solving
3 = -10 + 1y

Solving for variable 'y'.

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

Add '-1y' to each side of the equation.
3 + -1y = -10 + 1y + -1y

Combine like terms: 1y + -1y = 0
3 + -1y = -10 + 0
3 + -1y = -10

Add '-3' to each side of the equation.
3 + -3 + -1y = -10 + -3

Combine like terms: 3 + -3 = 0
0 + -1y = -10 + -3
-1y = -10 + -3

Combine like terms: -10 + -3 = -13
-1y = -13

Divide each side by '-1'.
y = 13

Simplifying
y = 13

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