x+(x-4)=18

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


Simplifying
x + (x + -4) = 18

Reorder the terms:
x + (-4 + x) = 18

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

Reorder the terms:
-4 + x + x = 18

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

Solving
-4 + 2x = 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 + 2x = 18 + 4

Combine like terms: -4 + 4 = 0
0 + 2x = 18 + 4
2x = 18 + 4

Combine like terms: 18 + 4 = 22
2x = 22

Divide each side by '2'.
x = 11

Simplifying
x = 11

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