-12=4x+40

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Solution for -12=4x+40 equation:


Simplifying
-12 = 4x + 40

Reorder the terms:
-12 = 40 + 4x

Solving
-12 = 40 + 4x

Solving for variable 'x'.

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

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

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

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

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

Combine like terms: 40 + 12 = 52
-4x = 52

Divide each side by '-4'.
x = -13

Simplifying
x = -13

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