15=12+x

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Solution for 15=12+x equation:


Simplifying
15 = 12 + x

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

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

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

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

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

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

Simplifying
x = 3

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