7n+8(n-1)=-128

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Solution for 7n+8(n-1)=-128 equation: 



7n+8(n-1)=-128

We move all terms to the left:

7n+8(n-1)-(-128)=0

We add all the numbers together, and all the variables

7n+8(n-1)+128=0

We multiply parentheses

7n+8n-8+128=0

We add all the numbers together, and all the variables

15n+120=0

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

15n=-120

n=-120/15

n=-8

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