-2.8(z+1)-(3.5z-9)=-31.6

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Solution for -2.8(z+1)-(3.5z-9)=-31.6 equation: 



-2.8(z+1)-(3.5z-9)=-31.6

We move all terms to the left:

-2.8(z+1)-(3.5z-9)-(-31.6)=0

We add all the numbers together, and all the variables

-2.8(z+1)-(3.5z-9)+31.6=0

We multiply parentheses

-2.8z-(3.5z-9)-2.8+31.6=0

We get rid of parentheses

-2.8z-3.5z+9-2.8+31.6=0

We add all the numbers together, and all the variables

-6.3z+37.8=0

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

-6.3z=-37.8

z=-37.8/-6.3

z=+6

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