X-13-x+2x=21

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Solution for X-13-x+2x=21 equation:


Simplifying
X + -13 + -1x + 2x = 21

Reorder the terms:
-13 + X + -1x + 2x = 21

Combine like terms: -1x + 2x = 1x
-13 + X + 1x = 21

Solving
-13 + X + 1x = 21

Solving for variable 'X'.

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

Add '13' to each side of the equation.
-13 + X + 13 + 1x = 21 + 13

Reorder the terms:
-13 + 13 + X + 1x = 21 + 13

Combine like terms: -13 + 13 = 0
0 + X + 1x = 21 + 13
X + 1x = 21 + 13

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

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

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

Simplifying
X = 34 + -1x

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