(x+3)=2x-18

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Solution for (x+3)=2x-18 equation:


Simplifying
(x + 3) = 2x + -18

Reorder the terms:
(3 + x) = 2x + -18

Remove parenthesis around (3 + x)
3 + x = 2x + -18

Reorder the terms:
3 + x = -18 + 2x

Solving
3 + x = -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.
3 + x + -2x = -18 + 2x + -2x

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

Combine like terms: 2x + -2x = 0
3 + -1x = -18 + 0
3 + -1x = -18

Add '-3' to each side of the equation.
3 + -3 + -1x = -18 + -3

Combine like terms: 3 + -3 = 0
0 + -1x = -18 + -3
-1x = -18 + -3

Combine like terms: -18 + -3 = -21
-1x = -21

Divide each side by '-1'.
x = 21

Simplifying
x = 21

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