x+3(x-4)=-72

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Solution for x+3(x-4)=-72 equation:


Simplifying
x + 3(x + -4) = -72

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

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

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

Solving
-12 + 4x = -72

Solving for variable 'x'.

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

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 = -60
4x = -60

Divide each side by '4'.
x = -15

Simplifying
x = -15

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