12=x+20

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Solution for 12=x+20 equation: 


Simplifying
12 = x + 20

Reorder the terms:
12 = 20 + x

Solving
12 = 20 + x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
12 + -1x = 20 + x + -1x

Combine like terms: x + -1x = 0
12 + -1x = 20 + 0
12 + -1x = 20

Add '-12' to each side of the equation.
12 + -12 + -1x = 20 + -12

Combine like terms: 12 + -12 = 0
0 + -1x = 20 + -12
-1x = 20 + -12

Combine like terms: 20 + -12 = 8
-1x = 8

Divide each side by '-1'.
x = -8

Simplifying
x = -8

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