12x-3(x-1)-5x=18

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Solution for 12x-3(x-1)-5x=18 equation:


Simplifying
12x + -3(x + -1) + -5x = 18

Reorder the terms:
12x + -3(-1 + x) + -5x = 18
12x + (-1 * -3 + x * -3) + -5x = 18
12x + (3 + -3x) + -5x = 18

Reorder the terms:
3 + 12x + -3x + -5x = 18

Combine like terms: 12x + -3x = 9x
3 + 9x + -5x = 18

Combine like terms: 9x + -5x = 4x
3 + 4x = 18

Solving
3 + 4x = 18

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 = 18 + -3

Combine like terms: 3 + -3 = 0
0 + 4x = 18 + -3
4x = 18 + -3

Combine like terms: 18 + -3 = 15
4x = 15

Divide each side by '4'.
x = 3.75

Simplifying
x = 3.75

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