4=z/7.5

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Solution for 4=z/7.5 equation: 



4=z/7.5

We move all terms to the left:

4-(z/7.5)=0

We add all the numbers together, and all the variables

-(+z/7.5)+4=0

We get rid of parentheses

-z/7.5+4=0

We multiply all the terms by the denominator


-z+4*7.5=0

We add all the numbers together, and all the variables

-1z+30=0

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

-z=-30

z=-30/-1

z=+30

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