0=-6x+21

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Solution for 0=-6x+21 equation: 



0=-6x+21

We move all terms to the left:

0-(-6x+21)=0

We add all the numbers together, and all the variables

-(-6x+21)=0

We get rid of parentheses

6x-21=0

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

6x=21

x=21/6

x=3+1/2

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