117-4x=4x+21

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Solution for 117-4x=4x+21 equation:


Simplifying
117 + -4x = 4x + 21

Reorder the terms:
117 + -4x = 21 + 4x

Solving
117 + -4x = 21 + 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.
117 + -4x + -4x = 21 + 4x + -4x

Combine like terms: -4x + -4x = -8x
117 + -8x = 21 + 4x + -4x

Combine like terms: 4x + -4x = 0
117 + -8x = 21 + 0
117 + -8x = 21

Add '-117' to each side of the equation.
117 + -117 + -8x = 21 + -117

Combine like terms: 117 + -117 = 0
0 + -8x = 21 + -117
-8x = 21 + -117

Combine like terms: 21 + -117 = -96
-8x = -96

Divide each side by '-8'.
x = 12

Simplifying
x = 12

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