121-4x=4x+9

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Solution for 121-4x=4x+9 equation:


Simplifying
121 + -4x = 4x + 9

Reorder the terms:
121 + -4x = 9 + 4x

Solving
121 + -4x = 9 + 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.
121 + -4x + -4x = 9 + 4x + -4x

Combine like terms: -4x + -4x = -8x
121 + -8x = 9 + 4x + -4x

Combine like terms: 4x + -4x = 0
121 + -8x = 9 + 0
121 + -8x = 9

Add '-121' to each side of the equation.
121 + -121 + -8x = 9 + -121

Combine like terms: 121 + -121 = 0
0 + -8x = 9 + -121
-8x = 9 + -121

Combine like terms: 9 + -121 = -112
-8x = -112

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

Simplifying
x = 14

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