(x-3)=12

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Solution for (x-3)=12 equation: 


Simplifying
(x + -3) = 12

Reorder the terms:
(-3 + x) = 12

Remove parenthesis around (-3 + x)
-3 + x = 12

Solving
-3 + x = 12

Solving for variable 'x'.

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

Add '3' to each side of the equation.
-3 + 3 + x = 12 + 3

Combine like terms: -3 + 3 = 0
0 + x = 12 + 3
x = 12 + 3

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

Simplifying
x = 15

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