-2z-8z=-70

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Solution for -2z-8z=-70 equation: 



-2z-8z=-70

We move all terms to the left:

-2z-8z-(-70)=0

We add all the numbers together, and all the variables

-10z+70=0

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

-10z=-70

z=-70/-10

z=+7

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