7=4z-9

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Solution for 7=4z-9 equation: 



7=4z-9

We move all terms to the left:

7-(4z-9)=0

We get rid of parentheses

-4z+9+7=0

We add all the numbers together, and all the variables

-4z+16=0

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

-4z=-16

z=-16/-4

z=+4

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