2x+9=x+12

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


Simplifying
2x + 9 = x + 12

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

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

Solving
9 + 2x = 12 + x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
9 + 2x + -1x = 12 + x + -1x

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

Combine like terms: x + -1x = 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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