10-x=3+12

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Solution for 10-x=3+12 equation: 


Simplifying
10 + -1x = 3 + 12

Combine like terms: 3 + 12 = 15
10 + -1x = 15

Solving
10 + -1x = 15

Solving for variable 'x'.

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

Add '-10' to each side of the equation.
10 + -10 + -1x = 15 + -10

Combine like terms: 10 + -10 = 0
0 + -1x = 15 + -10
-1x = 15 + -10

Combine like terms: 15 + -10 = 5
-1x = 5

Divide each side by '-1'.
x = -5

Simplifying
x = -5

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