13+3(z+7)=-5

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Solution for 13+3(z+7)=-5 equation: 



13+3(z+7)=-5

We move all terms to the left:

13+3(z+7)-(-5)=0

We add all the numbers together, and all the variables

3(z+7)+18=0

We multiply parentheses

3z+21+18=0

We add all the numbers together, and all the variables

3z+39=0

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

3z=-39

z=-39/3

z=-13

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