x+5x=21+2x

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Solution for x+5x=21+2x equation: 



x+5x=21+2x

We move all terms to the left:

x+5x-(21+2x)=0

We add all the numbers together, and all the variables

x+5x-(2x+21)=0

We add all the numbers together, and all the variables

6x-(2x+21)=0

We get rid of parentheses

6x-2x-21=0

We add all the numbers together, and all the variables

4x-21=0

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

4x=21

x=21/4

x=5+1/4

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