91-7x=11x+21

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Solution for 91-7x=11x+21 equation:


Simplifying
91 + -7x = 11x + 21

Reorder the terms:
91 + -7x = 21 + 11x

Solving
91 + -7x = 21 + 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 + -7x + -11x = 21 + 11x + -11x

Combine like terms: -7x + -11x = -18x
91 + -18x = 21 + 11x + -11x

Combine like terms: 11x + -11x = 0
91 + -18x = 21 + 0
91 + -18x = 21

Add '-91' to each side of the equation.
91 + -91 + -18x = 21 + -91

Combine like terms: 91 + -91 = 0
0 + -18x = 21 + -91
-18x = 21 + -91

Combine like terms: 21 + -91 = -70
-18x = -70

Divide each side by '-18'.
x = 3.888888889

Simplifying
x = 3.888888889

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