7.5=45+1.5z

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Solution for 7.5=45+1.5z equation: 



7.5=45+1.5z

We move all terms to the left:

7.5-(45+1.5z)=0

We add all the numbers together, and all the variables

-(1.5z+45)+7.5=0

We get rid of parentheses

-1.5z-45+7.5=0

We add all the numbers together, and all the variables

-1.5z-37.5=0

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

-1.5z=37.5

z=37.5/-1.5

z=-25

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