4-5-4z=-7-7z

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



4-5-4z=-7-7z

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We add all the numbers together, and all the variables

-4z-(-7z-7)-1=0

We get rid of parentheses

-4z+7z+7-1=0

We add all the numbers together, and all the variables

3z+6=0

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

3z=-6

z=-6/3

z=-2

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