9x+3x-12=2(3x+x)

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Solution for 9x+3x-12=2(3x+x) equation:


Simplifying
9x + 3x + -12 = 2(3x + x)

Reorder the terms:
-12 + 9x + 3x = 2(3x + x)

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

Combine like terms: 3x + x = 4x
-12 + 12x = 2(4x)

Remove parenthesis around (4x)
-12 + 12x = 2 * 4x

Multiply 2 * 4
-12 + 12x = 8x

Solving
-12 + 12x = 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 + 12x + -8x = 8x + -8x

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

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

Add '12' to each side of the equation.
-12 + 12 + 4x = 0 + 12

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

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

Divide each side by '4'.
x = 3

Simplifying
x = 3

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