20+12z=30+10z

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Solution for 20+12z=30+10z equation: 



20+12z=30+10z

We move all terms to the left:

20+12z-(30+10z)=0

We add all the numbers together, and all the variables

12z-(10z+30)+20=0

We get rid of parentheses

12z-10z-30+20=0

We add all the numbers together, and all the variables

2z-10=0

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

2z=10

z=10/2

z=5

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