10+12-x=15

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Solution for 10+12-x=15 equation:


Simplifying
10 + 12 + -1x = 15

Combine like terms: 10 + 12 = 22
22 + -1x = 15

Solving
22 + -1x = 15

Solving for variable 'x'.

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

Add '-22' to each side of the equation.
22 + -22 + -1x = 15 + -22

Combine like terms: 22 + -22 = 0
0 + -1x = 15 + -22
-1x = 15 + -22

Combine like terms: 15 + -22 = -7
-1x = -7

Divide each side by '-1'.
x = 7

Simplifying
x = 7

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