12x+9-4x-4+3x-7-x=30

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Solution for 12x+9-4x-4+3x-7-x=30 equation: 


Simplifying
12x + 9 + -4x + -4 + 3x + -7 + -1x = 30

Reorder the terms:
9 + -4 + -7 + 12x + -4x + 3x + -1x = 30

Combine like terms: 9 + -4 = 5
5 + -7 + 12x + -4x + 3x + -1x = 30

Combine like terms: 5 + -7 = -2
-2 + 12x + -4x + 3x + -1x = 30

Combine like terms: 12x + -4x = 8x
-2 + 8x + 3x + -1x = 30

Combine like terms: 8x + 3x = 11x
-2 + 11x + -1x = 30

Combine like terms: 11x + -1x = 10x
-2 + 10x = 30

Solving
-2 + 10x = 30

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 + 10x = 30 + 2

Combine like terms: -2 + 2 = 0
0 + 10x = 30 + 2
10x = 30 + 2

Combine like terms: 30 + 2 = 32
10x = 32

Divide each side by '10'.
x = 3.2

Simplifying
x = 3.2

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