[x+12]=3

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Solution for [x+12]=3 equation: 


Simplifying
[x + 12] = 3

Reorder the terms:
[12 + x] = 3

Remove brackets around [12 + x]
12 + x = 3

Solving
12 + x = 3

Solving for variable 'x'.

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

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

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

Combine like terms: 3 + -12 = -9
x = -9

Simplifying
x = -9

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