84=6x+3(2x-12)

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Solution for 84=6x+3(2x-12) equation:


Simplifying
84 = 6x + 3(2x + -12)

Reorder the terms:
84 = 6x + 3(-12 + 2x)
84 = 6x + (-12 * 3 + 2x * 3)
84 = 6x + (-36 + 6x)

Reorder the terms:
84 = -36 + 6x + 6x

Combine like terms: 6x + 6x = 12x
84 = -36 + 12x

Solving
84 = -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.
84 + -12x = -36 + 12x + -12x

Combine like terms: 12x + -12x = 0
84 + -12x = -36 + 0
84 + -12x = -36

Add '-84' to each side of the equation.
84 + -84 + -12x = -36 + -84

Combine like terms: 84 + -84 = 0
0 + -12x = -36 + -84
-12x = -36 + -84

Combine like terms: -36 + -84 = -120
-12x = -120

Divide each side by '-12'.
x = 10

Simplifying
x = 10

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