9x-84=5x-12

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Solution for 9x-84=5x-12 equation:


Simplifying
9x + -84 = 5x + -12

Reorder the terms:
-84 + 9x = 5x + -12

Reorder the terms:
-84 + 9x = -12 + 5x

Solving
-84 + 9x = -12 + 5x

Solving for variable 'x'.

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

Add '-5x' to each side of the equation.
-84 + 9x + -5x = -12 + 5x + -5x

Combine like terms: 9x + -5x = 4x
-84 + 4x = -12 + 5x + -5x

Combine like terms: 5x + -5x = 0
-84 + 4x = -12 + 0
-84 + 4x = -12

Add '84' to each side of the equation.
-84 + 84 + 4x = -12 + 84

Combine like terms: -84 + 84 = 0
0 + 4x = -12 + 84
4x = -12 + 84

Combine like terms: -12 + 84 = 72
4x = 72

Divide each side by '4'.
x = 18

Simplifying
x = 18

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