2x+3-x+9=

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


Simplifying
2x + 3 + -1x + 9 = 0

Reorder the terms:
3 + 9 + 2x + -1x = 0

Combine like terms: 3 + 9 = 12
12 + 2x + -1x = 0

Combine like terms: 2x + -1x = 1x
12 + 1x = 0

Solving
12 + 1x = 0

Solving for variable 'x'.

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

Add '-12' to each side of the equation.
12 + -12 + 1x = 0 + -12

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

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

Divide each side by '1'.
x = -12

Simplifying
x = -12

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