3z*7-4=9

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Solution for 3z*7-4=9 equation: 



3z*7-4=9

We move all terms to the left:

3z*7-4-(9)=0

We add all the numbers together, and all the variables

3z*7-13=0

Wy multiply elements

21z-13=0

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

21z=13

z=13/21

z=13/21

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