12-5-4x=91

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Solution for 12-5-4x=91 equation: 


Simplifying
12 + -5 + -4x = 91

Combine like terms: 12 + -5 = 7
7 + -4x = 91

Solving
7 + -4x = 91

Solving for variable 'x'.

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

Add '-7' to each side of the equation.
7 + -7 + -4x = 91 + -7

Combine like terms: 7 + -7 = 0
0 + -4x = 91 + -7
-4x = 91 + -7

Combine like terms: 91 + -7 = 84
-4x = 84

Divide each side by '-4'.
x = -21

Simplifying
x = -21

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