(3x+6)+(9x-8)=142

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Solution for (3x+6)+(9x-8)=142 equation:


Simplifying
(3x + 6) + (9x + -8) = 142

Reorder the terms:
(6 + 3x) + (9x + -8) = 142

Remove parenthesis around (6 + 3x)
6 + 3x + (9x + -8) = 142

Reorder the terms:
6 + 3x + (-8 + 9x) = 142

Remove parenthesis around (-8 + 9x)
6 + 3x + -8 + 9x = 142

Reorder the terms:
6 + -8 + 3x + 9x = 142

Combine like terms: 6 + -8 = -2
-2 + 3x + 9x = 142

Combine like terms: 3x + 9x = 12x
-2 + 12x = 142

Solving
-2 + 12x = 142

Solving for variable 'x'.

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

Add '2' to each side of the equation.
-2 + 2 + 12x = 142 + 2

Combine like terms: -2 + 2 = 0
0 + 12x = 142 + 2
12x = 142 + 2

Combine like terms: 142 + 2 = 144
12x = 144

Divide each side by '12'.
x = 12

Simplifying
x = 12

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