12=x+15

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Solution for 12=x+15 equation:


Simplifying
12 = x + 15

Reorder the terms:
12 = 15 + x

Solving
12 = 15 + 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.
12 + -1x = 15 + x + -1x

Combine like terms: x + -1x = 0
12 + -1x = 15 + 0
12 + -1x = 15

Add '-12' to each side of the equation.
12 + -12 + -1x = 15 + -12

Combine like terms: 12 + -12 = 0
0 + -1x = 15 + -12
-1x = 15 + -12

Combine like terms: 15 + -12 = 3
-1x = 3

Divide each side by '-1'.
x = -3

Simplifying
x = -3

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