-2(10-X)-x=-18

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Solution for -2(10-X)-x=-18 equation:


Simplifying
-2(10 + -1X) + -1x = -18
(10 * -2 + -1X * -2) + -1x = -18
(-20 + 2X) + -1x = -18

Solving
-20 + 2X + -1x = -18

Solving for variable 'X'.

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

Add '20' to each side of the equation.
-20 + 2X + 20 + -1x = -18 + 20

Reorder the terms:
-20 + 20 + 2X + -1x = -18 + 20

Combine like terms: -20 + 20 = 0
0 + 2X + -1x = -18 + 20
2X + -1x = -18 + 20

Combine like terms: -18 + 20 = 2
2X + -1x = 2

Add 'x' to each side of the equation.
2X + -1x + x = 2 + x

Combine like terms: -1x + x = 0
2X + 0 = 2 + x
2X = 2 + x

Divide each side by '2'.
X = 1 + 0.5x

Simplifying
X = 1 + 0.5x

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