2x-21=180-x

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Solution for 2x-21=180-x equation: 



2x-21=180-x

We move all terms to the left:

2x-21-(180-x)=0

We add all the numbers together, and all the variables

2x-(-1x+180)-21=0

We get rid of parentheses

2x+1x-180-21=0

We add all the numbers together, and all the variables

3x-201=0

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

3x=201

x=201/3

x=67

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