3x=21,x=

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Solution for 3x=21,x= equation: 



3x=21.x=

We move all terms to the left:

3x-(21.x)=0

We add all the numbers together, and all the variables

3x-(+21.x)=0

We get rid of parentheses

3x-21.x=0

We add all the numbers together, and all the variables

-18x=0

x=0/-18

x=0

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