21-6X=15

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Solution for 21-6X=15 equation: 


Simplifying
21 + -6X = 15

Solving
21 + -6X = 15

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 + -6X = 15 + -21

Combine like terms: 21 + -21 = 0
0 + -6X = 15 + -21
-6X = 15 + -21

Combine like terms: 15 + -21 = -6
-6X = -6

Divide each side by '-6'.
X = 1

Simplifying
X = 1

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