2x+(x+30)+(x-35)+100+105=720

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Solution for 2x+(x+30)+(x-35)+100+105=720 equation: 



2x+(x+30)+(x-35)+100+105=720

We move all terms to the left:

2x+(x+30)+(x-35)+100+105-(720)=0

We add all the numbers together, and all the variables

2x+(x+30)+(x-35)-515=0

We get rid of parentheses

2x+x+x+30-35-515=0

We add all the numbers together, and all the variables

4x-520=0

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

4x=520

x=520/4

x=130

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