91-4x=10x-21

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Solution for 91-4x=10x-21 equation:


Simplifying
91 + -4x = 10x + -21

Reorder the terms:
91 + -4x = -21 + 10x

Solving
91 + -4x = -21 + 10x

Solving for variable 'x'.

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

Add '-10x' to each side of the equation.
91 + -4x + -10x = -21 + 10x + -10x

Combine like terms: -4x + -10x = -14x
91 + -14x = -21 + 10x + -10x

Combine like terms: 10x + -10x = 0
91 + -14x = -21 + 0
91 + -14x = -21

Add '-91' to each side of the equation.
91 + -91 + -14x = -21 + -91

Combine like terms: 91 + -91 = 0
0 + -14x = -21 + -91
-14x = -21 + -91

Combine like terms: -21 + -91 = -112
-14x = -112

Divide each side by '-14'.
x = 8

Simplifying
x = 8

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