12-x=4

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Solution for 12-x=4 equation: 


Simplifying
12 + -1x = 4

Solving
12 + -1x = 4

Solving for variable 'x'.

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

Add '-12' to each side of the equation.
12 + -12 + -1x = 4 + -12

Combine like terms: 12 + -12 = 0
0 + -1x = 4 + -12
-1x = 4 + -12

Combine like terms: 4 + -12 = -8
-1x = -8

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

Simplifying
x = 8

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