x+(x-18)=42

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Solution for x+(x-18)=42 equation: 



X+(X-18)=42

We move all terms to the left:

X+(X-18)-(42)=0

We get rid of parentheses

X+X-18-42=0

We add all the numbers together, and all the variables

2X-60=0

We move all terms containing X to the left, all other terms to the right

2X=60

X=60/2

X=30

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