6x+18-3-2x=x-21-9x

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Solution for 6x+18-3-2x=x-21-9x equation:


Simplifying
6x + 18 + -3 + -2x = x + -21 + -9x

Reorder the terms:
18 + -3 + 6x + -2x = x + -21 + -9x

Combine like terms: 18 + -3 = 15
15 + 6x + -2x = x + -21 + -9x

Combine like terms: 6x + -2x = 4x
15 + 4x = x + -21 + -9x

Reorder the terms:
15 + 4x = -21 + x + -9x

Combine like terms: x + -9x = -8x
15 + 4x = -21 + -8x

Solving
15 + 4x = -21 + -8x

Solving for variable 'x'.

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

Add '8x' to each side of the equation.
15 + 4x + 8x = -21 + -8x + 8x

Combine like terms: 4x + 8x = 12x
15 + 12x = -21 + -8x + 8x

Combine like terms: -8x + 8x = 0
15 + 12x = -21 + 0
15 + 12x = -21

Add '-15' to each side of the equation.
15 + -15 + 12x = -21 + -15

Combine like terms: 15 + -15 = 0
0 + 12x = -21 + -15
12x = -21 + -15

Combine like terms: -21 + -15 = -36
12x = -36

Divide each side by '12'.
x = -3

Simplifying
x = -3

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