30.5=7-z-3.5z

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Solution for 30.5=7-z-3.5z equation: 



30.5=7-z-3.5z

We move all terms to the left:

30.5-(7-z-3.5z)=0

We add all the numbers together, and all the variables

-(-4.5z+7)+30.5=0

We get rid of parentheses

4.5z-7+30.5=0

We add all the numbers together, and all the variables

4.5z+23.5=0

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

4.5z=-23.5

z=-23.5/4.5

z=-5+1/4.5

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