12+(9x)-(4x)-3=

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Solution for 12+(9x)-(4x)-3= equation: 


Simplifying
12 + (9x) + -1(4x) + -3 = 0

Remove parenthesis around (4x)
12 + (9x) + -1 * 4x + -3 = 0

Multiply -1 * 4
12 + (9x) + -4x + -3 = 0

Reorder the terms:
12 + -3 + (9x) + -4x = 0

Combine like terms: 12 + -3 = 9
9 + (9x) + -4x = 0

Combine like terms: (9x) + -4x = 5x
9 + 5x = 0

Solving
9 + 5x = 0

Solving for variable 'x'.

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

Add '-9' to each side of the equation.
9 + -9 + 5x = 0 + -9

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

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

Divide each side by '5'.
x = -1.8

Simplifying
x = -1.8

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