2x+3x-x+9=x+2x+12

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Solution for 2x+3x-x+9=x+2x+12 equation:


Simplifying
2x + 3x + -1x + 9 = x + 2x + 12

Reorder the terms:
9 + 2x + 3x + -1x = x + 2x + 12

Combine like terms: 2x + 3x = 5x
9 + 5x + -1x = x + 2x + 12

Combine like terms: 5x + -1x = 4x
9 + 4x = x + 2x + 12

Reorder the terms:
9 + 4x = 12 + x + 2x

Combine like terms: x + 2x = 3x
9 + 4x = 12 + 3x

Solving
9 + 4x = 12 + 3x

Solving for variable 'x'.

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

Add '-3x' to each side of the equation.
9 + 4x + -3x = 12 + 3x + -3x

Combine like terms: 4x + -3x = 1x
9 + 1x = 12 + 3x + -3x

Combine like terms: 3x + -3x = 0
9 + 1x = 12 + 0
9 + 1x = 12

Add '-9' to each side of the equation.
9 + -9 + 1x = 12 + -9

Combine like terms: 9 + -9 = 0
0 + 1x = 12 + -9
1x = 12 + -9

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

Divide each side by '1'.
x = 3

Simplifying
x = 3

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