7z-2z=4-13

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Solution for 7z-2z=4-13 equation: 



7z-2z=4-13

We move all terms to the left:

7z-2z-(4-13)=0

We add all the numbers together, and all the variables

7z-2z-(-9)=0

We add all the numbers together, and all the variables

5z+9=0

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

5z=-9

z=-9/5

z=-1+4/5

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