2x+(x+18)=90

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Solution for 2x+(x+18)=90 equation:


Simplifying
2x + (x + 18) = 90

Reorder the terms:
2x + (18 + x) = 90

Remove parenthesis around (18 + x)
2x + 18 + x = 90

Reorder the terms:
18 + 2x + x = 90

Combine like terms: 2x + x = 3x
18 + 3x = 90

Solving
18 + 3x = 90

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 + 3x = 90 + -18

Combine like terms: 18 + -18 = 0
0 + 3x = 90 + -18
3x = 90 + -18

Combine like terms: 90 + -18 = 72
3x = 72

Divide each side by '3'.
x = 24

Simplifying
x = 24

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