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)=0

We get rid of parentheses

4z+7=0

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

4z=-7

z=-7/4

z=-1+3/4

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