13=z+2.1

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Solution for 13=z+2.1 equation: 



13=z+2.1

We move all terms to the left:

13-(z+2.1)=0

We get rid of parentheses

-z-2.1+13=0

We add all the numbers together, and all the variables

-1z+10.9=0

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

-z=-10.9

z=-10.9/-1

z=10+0.9/1

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