2x+21=x+17

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Solution for 2x+21=x+17 equation: 



2x+21=x+17

We move all terms to the left:

2x+21-(x+17)=0

We get rid of parentheses

2x-x-17+21=0

We add all the numbers together, and all the variables

x+4=0

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

x=-4

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