78=y-12

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Solution for 78=y-12 equation:


Simplifying
78 = y + -12

Reorder the terms:
78 = -12 + y

Solving
78 = -12 + y

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.
78 + -1y = -12 + y + -1y

Combine like terms: y + -1y = 0
78 + -1y = -12 + 0
78 + -1y = -12

Add '-78' to each side of the equation.
78 + -78 + -1y = -12 + -78

Combine like terms: 78 + -78 = 0
0 + -1y = -12 + -78
-1y = -12 + -78

Combine like terms: -12 + -78 = -90
-1y = -90

Divide each side by '-1'.
y = 90

Simplifying
y = 90

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