(1.7z-5)-(1.2z-18)=-7

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Solution for (1.7z-5)-(1.2z-18)=-7 equation: 



(1.7z-5)-(1.2z-18)=-7

We move all terms to the left:

(1.7z-5)-(1.2z-18)-(-7)=0

We add all the numbers together, and all the variables

(1.7z-5)-(1.2z-18)+7=0

We get rid of parentheses

1.7z-1.2z-5+18+7=0

We add all the numbers together, and all the variables

0.5z+20=0

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

0.5z=-20

z=-20/0.5

z=-40

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