25-X=12

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Solution for 25-X=12 equation: 


Simplifying
25 + -1X = 12

Solving
25 + -1X = 12

Solving for variable 'X'.

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

Add '-25' to each side of the equation.
25 + -25 + -1X = 12 + -25

Combine like terms: 25 + -25 = 0
0 + -1X = 12 + -25
-1X = 12 + -25

Combine like terms: 12 + -25 = -13
-1X = -13

Divide each side by '-1'.
X = 13

Simplifying
X = 13

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