x+(x+18)=72

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Solution for x+(x+18)=72 equation:


Simplifying
x + (x + 18) = 72

Reorder the terms:
x + (18 + x) = 72

Remove parenthesis around (18 + x)
x + 18 + x = 72

Reorder the terms:
18 + x + x = 72

Combine like terms: x + x = 2x
18 + 2x = 72

Solving
18 + 2x = 72

Solving for variable 'x'.

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

Add '-18' to each side of the equation.
18 + -18 + 2x = 72 + -18

Combine like terms: 18 + -18 = 0
0 + 2x = 72 + -18
2x = 72 + -18

Combine like terms: 72 + -18 = 54
2x = 54

Divide each side by '2'.
x = 27

Simplifying
x = 27

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