7-8+2y=12

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Solution for 7-8+2y=12 equation: 


Simplifying
7 + -8 + 2y = 12

Combine like terms: 7 + -8 = -1
-1 + 2y = 12

Solving
-1 + 2y = 12

Solving for variable 'y'.

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

Add '1' to each side of the equation.
-1 + 1 + 2y = 12 + 1

Combine like terms: -1 + 1 = 0
0 + 2y = 12 + 1
2y = 12 + 1

Combine like terms: 12 + 1 = 13
2y = 13

Divide each side by '2'.
y = 6.5

Simplifying
y = 6.5

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