12+x+3=10

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Solution for 12+x+3=10 equation: 


Simplifying
12 + x + 3 = 10

Reorder the terms:
12 + 3 + x = 10

Combine like terms: 12 + 3 = 15
15 + x = 10

Solving
15 + x = 10

Solving for variable 'x'.

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

Add '-15' to each side of the equation.
15 + -15 + x = 10 + -15

Combine like terms: 15 + -15 = 0
0 + x = 10 + -15
x = 10 + -15

Combine like terms: 10 + -15 = -5
x = -5

Simplifying
x = -5

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