21-X=34

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Solution for 21-X=34 equation: 


Simplifying
21 + -1X = 34

Solving
21 + -1X = 34

Solving for variable 'X'.

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

Add '-21' to each side of the equation.
21 + -21 + -1X = 34 + -21

Combine like terms: 21 + -21 = 0
0 + -1X = 34 + -21
-1X = 34 + -21

Combine like terms: 34 + -21 = 13
-1X = 13

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

Simplifying
X = -13

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