-7=-4+-z

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



-7=-4+-z

We move all terms to the left:

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

We add all the numbers together, and all the variables

-(-1z)-7=0

We get rid of parentheses

1z-7=0

We add all the numbers together, and all the variables

z-7=0

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

z=7

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