18=3X-X

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Solution for 18=3X-X equation:


Simplifying
18 = 3X + -1X

Combine like terms: 3X + -1X = 2X
18 = 2X

Solving
18 = 2X

Solving for variable 'X'.

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

Add '-2X' to each side of the equation.
18 + -2X = 2X + -2X

Combine like terms: 2X + -2X = 0
18 + -2X = 0

Add '-18' to each side of the equation.
18 + -18 + -2X = 0 + -18

Combine like terms: 18 + -18 = 0
0 + -2X = 0 + -18
-2X = 0 + -18

Combine like terms: 0 + -18 = -18
-2X = -18

Divide each side by '-2'.
X = 9

Simplifying
X = 9

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