3=z/7

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Solution for 3=z/7 equation: 



3=z/7

We move all terms to the left:

3-(z/7)=0

We add all the numbers together, and all the variables

-(+z/7)+3=0

We get rid of parentheses

-z/7+3=0

We multiply all the terms by the denominator


-z+3*7=0

We add all the numbers together, and all the variables

-1z+21=0

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

-z=-21

z=-21/-1

z=+21

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