120+2(10x+15)=310

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Solution for 120+2(10x+15)=310 equation: 



120+2(10x+15)=310

We move all terms to the left:

120+2(10x+15)-(310)=0

We add all the numbers together, and all the variables

2(10x+15)-190=0

We multiply parentheses

20x+30-190=0

We add all the numbers together, and all the variables

20x-160=0

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

20x=160

x=160/20

x=8

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