3x-10=90+x+20

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Solution for 3x-10=90+x+20 equation: 



3x-10=90+x+20

We move all terms to the left:

3x-10-(90+x+20)=0

We add all the numbers together, and all the variables

3x-(x+110)-10=0

We get rid of parentheses

3x-x-110-10=0

We add all the numbers together, and all the variables

2x-120=0

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

2x=120

x=120/2

x=60

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