4x+12=8x-72

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Solution for 4x+12=8x-72 equation:


Simplifying
4x + 12 = 8x + -72

Reorder the terms:
12 + 4x = 8x + -72

Reorder the terms:
12 + 4x = -72 + 8x

Solving
12 + 4x = -72 + 8x

Solving for variable 'x'.

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

Add '-8x' to each side of the equation.
12 + 4x + -8x = -72 + 8x + -8x

Combine like terms: 4x + -8x = -4x
12 + -4x = -72 + 8x + -8x

Combine like terms: 8x + -8x = 0
12 + -4x = -72 + 0
12 + -4x = -72

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

Combine like terms: 12 + -12 = 0
0 + -4x = -72 + -12
-4x = -72 + -12

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

Divide each side by '-4'.
x = 21

Simplifying
x = 21

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