12x-3x+99=12x+36

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Solution for 12x-3x+99=12x+36 equation:


Simplifying
12x + -3x + 99 = 12x + 36

Reorder the terms:
99 + 12x + -3x = 12x + 36

Combine like terms: 12x + -3x = 9x
99 + 9x = 12x + 36

Reorder the terms:
99 + 9x = 36 + 12x

Solving
99 + 9x = 36 + 12x

Solving for variable 'x'.

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

Add '-12x' to each side of the equation.
99 + 9x + -12x = 36 + 12x + -12x

Combine like terms: 9x + -12x = -3x
99 + -3x = 36 + 12x + -12x

Combine like terms: 12x + -12x = 0
99 + -3x = 36 + 0
99 + -3x = 36

Add '-99' to each side of the equation.
99 + -99 + -3x = 36 + -99

Combine like terms: 99 + -99 = 0
0 + -3x = 36 + -99
-3x = 36 + -99

Combine like terms: 36 + -99 = -63
-3x = -63

Divide each side by '-3'.
x = 21

Simplifying
x = 21

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