91=x+6x+7

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Solution for 91=x+6x+7 equation:


Simplifying
91 = x + 6x + 7

Reorder the terms:
91 = 7 + x + 6x

Combine like terms: x + 6x = 7x
91 = 7 + 7x

Solving
91 = 7 + 7x

Solving for variable 'x'.

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

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

Combine like terms: 7x + -7x = 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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