-18-x=42+3x

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Solution for -18-x=42+3x equation:


Simplifying
-18 + -1x = 42 + 3x

Solving
-18 + -1x = 42 + 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.
-18 + -1x + -3x = 42 + 3x + -3x

Combine like terms: -1x + -3x = -4x
-18 + -4x = 42 + 3x + -3x

Combine like terms: 3x + -3x = 0
-18 + -4x = 42 + 0
-18 + -4x = 42

Add '18' to each side of the equation.
-18 + 18 + -4x = 42 + 18

Combine like terms: -18 + 18 = 0
0 + -4x = 42 + 18
-4x = 42 + 18

Combine like terms: 42 + 18 = 60
-4x = 60

Divide each side by '-4'.
x = -15

Simplifying
x = -15

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