12+2-x=90

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Solution for 12+2-x=90 equation: 


Simplifying
12 + 2 + -1x = 90

Combine like terms: 12 + 2 = 14
14 + -1x = 90

Solving
14 + -1x = 90

Solving for variable 'x'.

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

Add '-14' to each side of the equation.
14 + -14 + -1x = 90 + -14

Combine like terms: 14 + -14 = 0
0 + -1x = 90 + -14
-1x = 90 + -14

Combine like terms: 90 + -14 = 76
-1x = 76

Divide each side by '-1'.
x = -76

Simplifying
x = -76

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