z+20+z+25=5z-30

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Solution for z+20+z+25=5z-30 equation: 



z+20+z+25=5z-30

We move all terms to the left:

z+20+z+25-(5z-30)=0

We add all the numbers together, and all the variables

2z-(5z-30)+45=0

We get rid of parentheses

2z-5z+30+45=0

We add all the numbers together, and all the variables

-3z+75=0

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

-3z=-75

z=-75/-3

z=+25

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