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

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


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

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

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

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

Combine like terms: x + (3x) = 4x
-2 + 4x + x = 18

Combine like terms: 4x + x = 5x
-2 + 5x = 18

Solving
-2 + 5x = 18

Solving for variable 'x'.

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

Add '2' to each side of the equation.
-2 + 2 + 5x = 18 + 2

Combine like terms: -2 + 2 = 0
0 + 5x = 18 + 2
5x = 18 + 2

Combine like terms: 18 + 2 = 20
5x = 20

Divide each side by '5'.
x = 4

Simplifying
x = 4

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