2x-18=72-x

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Solution for 2x-18=72-x equation: 



2x-18=72-x

We move all terms to the left:

2x-18-(72-x)=0

We add all the numbers together, and all the variables

2x-(-1x+72)-18=0

We get rid of parentheses

2x+1x-72-18=0

We add all the numbers together, and all the variables

3x-90=0

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

3x=90

x=90/3

x=30

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