12-4y=40

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Solution for 12-4y=40 equation: 


Simplifying
12 + -4y = 40

Solving
12 + -4y = 40

Solving for variable 'y'.

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

Add '-12' to each side of the equation.
12 + -12 + -4y = 40 + -12

Combine like terms: 12 + -12 = 0
0 + -4y = 40 + -12
-4y = 40 + -12

Combine like terms: 40 + -12 = 28
-4y = 28

Divide each side by '-4'.
y = -7

Simplifying
y = -7

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