3x=220+x

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Solution for 3x=220+x equation: 



3x=220+x

We move all terms to the left:

3x-(220+x)=0

We add all the numbers together, and all the variables

3x-(x+220)=0

We get rid of parentheses

3x-x-220=0

We add all the numbers together, and all the variables

2x-220=0

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

2x=220

x=220/2

x=110

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