3.5z-1.7z=-9

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Solution for 3.5z-1.7z=-9 equation: 



3.5z-1.7z=-9

We move all terms to the left:

3.5z-1.7z-(-9)=0

We add all the numbers together, and all the variables

1.8z+9=0

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

1.8z=-9

z=-9/1.8

z=-5

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