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

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Solution for 3x+9-x=12-2x+1 equation:


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

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

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

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

Combine like terms: 12 + 1 = 13
9 + 2x = 13 + -2x

Solving
9 + 2x = 13 + -2x

Solving for variable 'x'.

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

Add '2x' to each side of the equation.
9 + 2x + 2x = 13 + -2x + 2x

Combine like terms: 2x + 2x = 4x
9 + 4x = 13 + -2x + 2x

Combine like terms: -2x + 2x = 0
9 + 4x = 13 + 0
9 + 4x = 13

Add '-9' to each side of the equation.
9 + -9 + 4x = 13 + -9

Combine like terms: 9 + -9 = 0
0 + 4x = 13 + -9
4x = 13 + -9

Combine like terms: 13 + -9 = 4
4x = 4

Divide each side by '4'.
x = 1

Simplifying
x = 1

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