-10.2=20.3+z

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Solution for -10.2=20.3+z equation: 



-10.2=20.3+z

We move all terms to the left:

-10.2-(20.3+z)=0

We add all the numbers together, and all the variables

-(z+20.3)-10.2=0

We get rid of parentheses

-z-20.3-10.2=0

We add all the numbers together, and all the variables

-1z-30.5=0

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

-z=30.5

z=30.5/-1

z=-30+0.5/1

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