12+x-9+3x=

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Solution for 12+x-9+3x= equation:


Simplifying
12 + x + -9 + 3x = 0

Reorder the terms:
12 + -9 + x + 3x = 0

Combine like terms: 12 + -9 = 3
3 + x + 3x = 0

Combine like terms: x + 3x = 4x
3 + 4x = 0

Solving
3 + 4x = 0

Solving for variable 'x'.

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

Add '-3' to each side of the equation.
3 + -3 + 4x = 0 + -3

Combine like terms: 3 + -3 = 0
0 + 4x = 0 + -3
4x = 0 + -3

Combine like terms: 0 + -3 = -3
4x = -3

Divide each side by '4'.
x = -0.75

Simplifying
x = -0.75

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