91=7x-2(-2x+4)

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Solution for 91=7x-2(-2x+4) equation:


Simplifying
91 = 7x + -2(-2x + 4)

Reorder the terms:
91 = 7x + -2(4 + -2x)
91 = 7x + (4 * -2 + -2x * -2)
91 = 7x + (-8 + 4x)

Reorder the terms:
91 = -8 + 7x + 4x

Combine like terms: 7x + 4x = 11x
91 = -8 + 11x

Solving
91 = -8 + 11x

Solving for variable 'x'.

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

Add '-11x' to each side of the equation.
91 + -11x = -8 + 11x + -11x

Combine like terms: 11x + -11x = 0
91 + -11x = -8 + 0
91 + -11x = -8

Add '-91' to each side of the equation.
91 + -91 + -11x = -8 + -91

Combine like terms: 91 + -91 = 0
0 + -11x = -8 + -91
-11x = -8 + -91

Combine like terms: -8 + -91 = -99
-11x = -99

Divide each side by '-11'.
x = 9

Simplifying
x = 9

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