2z+20=4z-10

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Solution for 2z+20=4z-10 equation: 



2z+20=4z-10

We move all terms to the left:

2z+20-(4z-10)=0

We get rid of parentheses

2z-4z+10+20=0

We add all the numbers together, and all the variables

-2z+30=0

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

-2z=-30

z=-30/-2

z=+15

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