3x-91=-4x-7

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


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

Reorder the terms:
-91 + 3x = -4x + -7

Reorder the terms:
-91 + 3x = -7 + -4x

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

Solving for variable 'x'.

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

Add '4x' to each side of the equation.
-91 + 3x + 4x = -7 + -4x + 4x

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

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

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

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

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

Divide each side by '7'.
x = 12

Simplifying
x = 12

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