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

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


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

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

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

Combine like terms: 12x + -4x = 8x
5 + 8x = 7 + -1x + 30

Reorder the terms:
5 + 8x = 7 + 30 + -1x

Combine like terms: 7 + 30 = 37
5 + 8x = 37 + -1x

Solving
5 + 8x = 37 + -1x

Solving for variable 'x'.

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

Add 'x' to each side of the equation.
5 + 8x + x = 37 + -1x + x

Combine like terms: 8x + x = 9x
5 + 9x = 37 + -1x + x

Combine like terms: -1x + x = 0
5 + 9x = 37 + 0
5 + 9x = 37

Add '-5' to each side of the equation.
5 + -5 + 9x = 37 + -5

Combine like terms: 5 + -5 = 0
0 + 9x = 37 + -5
9x = 37 + -5

Combine like terms: 37 + -5 = 32
9x = 32

Divide each side by '9'.
x = 3.555555556

Simplifying
x = 3.555555556

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