7=9z+5-4z

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Solution for 7=9z+5-4z equation: 



7=9z+5-4z

We move all terms to the left:

7-(9z+5-4z)=0

We add all the numbers together, and all the variables

-(5z+5)+7=0

We get rid of parentheses

-5z-5+7=0

We add all the numbers together, and all the variables

-5z+2=0

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

-5z=-2

z=-2/-5

z=2/5

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