72-4x=3x-12

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Solution for 72-4x=3x-12 equation:


Simplifying
72 + -4x = 3x + -12

Reorder the terms:
72 + -4x = -12 + 3x

Solving
72 + -4x = -12 + 3x

Solving for variable 'x'.

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

Add '-3x' to each side of the equation.
72 + -4x + -3x = -12 + 3x + -3x

Combine like terms: -4x + -3x = -7x
72 + -7x = -12 + 3x + -3x

Combine like terms: 3x + -3x = 0
72 + -7x = -12 + 0
72 + -7x = -12

Add '-72' to each side of the equation.
72 + -72 + -7x = -12 + -72

Combine like terms: 72 + -72 = 0
0 + -7x = -12 + -72
-7x = -12 + -72

Combine like terms: -12 + -72 = -84
-7x = -84

Divide each side by '-7'.
x = 12

Simplifying
x = 12

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