10+12=9+x

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Solution for 10+12=9+x equation:


Simplifying
10 + 12 = 9 + x

Combine like terms: 10 + 12 = 22
22 = 9 + x

Solving
22 = 9 + 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.
22 + -1x = 9 + x + -1x

Combine like terms: x + -1x = 0
22 + -1x = 9 + 0
22 + -1x = 9

Add '-22' to each side of the equation.
22 + -22 + -1x = 9 + -22

Combine like terms: 22 + -22 = 0
0 + -1x = 9 + -22
-1x = 9 + -22

Combine like terms: 9 + -22 = -13
-1x = -13

Divide each side by '-1'.
x = 13

Simplifying
x = 13

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