x+(-3)=3x+18

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


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

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

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

Solving
-3 + x = 18 + 3x

Solving for variable 'x'.

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

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

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

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

Add '3' to each side of the equation.
-3 + 3 + -2x = 18 + 3

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

Combine like terms: 18 + 3 = 21
-2x = 21

Divide each side by '-2'.
x = -10.5

Simplifying
x = -10.5

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