7-4x-3x=91

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Solution for 7-4x-3x=91 equation: 


Simplifying
7 + -4x + -3x = 91

Combine like terms: -4x + -3x = -7x
7 + -7x = 91

Solving
7 + -7x = 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 + -7x = 91 + -7

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

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

Divide each side by '-7'.
x = -12

Simplifying
x = -12

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