13z+7=-9-3z

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Solution for 13z+7=-9-3z equation: 



13z+7=-9-3z

We move all terms to the left:

13z+7-(-9-3z)=0

We add all the numbers together, and all the variables

13z-(-3z-9)+7=0

We get rid of parentheses

13z+3z+9+7=0

We add all the numbers together, and all the variables

16z+16=0

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

16z=-16

z=-16/16

z=-1

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