4z+7=5z+9

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



4z+7=5z+9

We move all terms to the left:

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

We get rid of parentheses

4z-5z-9+7=0

We add all the numbers together, and all the variables

-1z-2=0

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

-z=2

z=2/-1

z=-2

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