36-3X=21

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Solution for 36-3X=21 equation: 


Simplifying
36 + -3X = 21

Solving
36 + -3X = 21

Solving for variable 'X'.

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

Add '-36' to each side of the equation.
36 + -36 + -3X = 21 + -36

Combine like terms: 36 + -36 = 0
0 + -3X = 21 + -36
-3X = 21 + -36

Combine like terms: 21 + -36 = -15
-3X = -15

Divide each side by '-3'.
X = 5

Simplifying
X = 5

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