2x+21=1x+84

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Solution for 2x+21=1x+84 equation: 



2x+21=1x+84

We move all terms to the left:

2x+21-(1x+84)=0

We add all the numbers together, and all the variables

2x-(x+84)+21=0

We get rid of parentheses

2x-x-84+21=0

We add all the numbers together, and all the variables

x-63=0

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

x=63

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