-4-(x+3x)=18

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Solution for -4-(x+3x)=18 equation:


Simplifying
-4 + -1(x + 3x) = 18

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

Remove parenthesis around (4x)
-4 + -1 * 4x = 18

Multiply -1 * 4
-4 + -4x = 18

Solving
-4 + -4x = 18

Solving for variable 'x'.

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

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

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

Combine like terms: 18 + 4 = 22
-4x = 22

Divide each side by '-4'.
x = -5.5

Simplifying
x = -5.5

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