x+12-7=9

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Solution for x+12-7=9 equation: 


Simplifying
x + 12 + -7 = 9

Reorder the terms:
12 + -7 + x = 9

Combine like terms: 12 + -7 = 5
5 + x = 9

Solving
5 + x = 9

Solving for variable 'x'.

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

Add '-5' to each side of the equation.
5 + -5 + x = 9 + -5

Combine like terms: 5 + -5 = 0
0 + x = 9 + -5
x = 9 + -5

Combine like terms: 9 + -5 = 4
x = 4

Simplifying
x = 4

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