3(x-4)-6=3(-2x-x)+20

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Solution for 3(x-4)-6=3(-2x-x)+20 equation:


Simplifying
3(x + -4) + -6 = 3(-2x + -1x) + 20

Reorder the terms:
3(-4 + x) + -6 = 3(-2x + -1x) + 20
(-4 * 3 + x * 3) + -6 = 3(-2x + -1x) + 20
(-12 + 3x) + -6 = 3(-2x + -1x) + 20

Reorder the terms:
-12 + -6 + 3x = 3(-2x + -1x) + 20

Combine like terms: -12 + -6 = -18
-18 + 3x = 3(-2x + -1x) + 20

Combine like terms: -2x + -1x = -3x
-18 + 3x = 3(-3x) + 20

Remove parenthesis around (-3x)
-18 + 3x = 3 * -3x + 20

Multiply 3 * -3
-18 + 3x = -9x + 20

Reorder the terms:
-18 + 3x = 20 + -9x

Solving
-18 + 3x = 20 + -9x

Solving for variable 'x'.

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

Add '9x' to each side of the equation.
-18 + 3x + 9x = 20 + -9x + 9x

Combine like terms: 3x + 9x = 12x
-18 + 12x = 20 + -9x + 9x

Combine like terms: -9x + 9x = 0
-18 + 12x = 20 + 0
-18 + 12x = 20

Add '18' to each side of the equation.
-18 + 18 + 12x = 20 + 18

Combine like terms: -18 + 18 = 0
0 + 12x = 20 + 18
12x = 20 + 18

Combine like terms: 20 + 18 = 38
12x = 38

Divide each side by '12'.
x = 3.166666667

Simplifying
x = 3.166666667

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