12+3x-9-x=14x-21

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Solution for 12+3x-9-x=14x-21 equation:


Simplifying
12 + 3x + -9 + -1x = 14x + -21

Reorder the terms:
12 + -9 + 3x + -1x = 14x + -21

Combine like terms: 12 + -9 = 3
3 + 3x + -1x = 14x + -21

Combine like terms: 3x + -1x = 2x
3 + 2x = 14x + -21

Reorder the terms:
3 + 2x = -21 + 14x

Solving
3 + 2x = -21 + 14x

Solving for variable 'x'.

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

Add '-14x' to each side of the equation.
3 + 2x + -14x = -21 + 14x + -14x

Combine like terms: 2x + -14x = -12x
3 + -12x = -21 + 14x + -14x

Combine like terms: 14x + -14x = 0
3 + -12x = -21 + 0
3 + -12x = -21

Add '-3' to each side of the equation.
3 + -3 + -12x = -21 + -3

Combine like terms: 3 + -3 = 0
0 + -12x = -21 + -3
-12x = -21 + -3

Combine like terms: -21 + -3 = -24
-12x = -24

Divide each side by '-12'.
x = 2

Simplifying
x = 2

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