-7(1+k)-3k=-87

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Solution for -7(1+k)-3k=-87 equation: 



-7(1+k)-3k=-87

We move all terms to the left:

-7(1+k)-3k-(-87)=0

We add all the numbers together, and all the variables

-7(k+1)-3k-(-87)=0

We add all the numbers together, and all the variables

-3k-7(k+1)+87=0

We multiply parentheses

-3k-7k-7+87=0

We add all the numbers together, and all the variables

-10k+80=0

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

-10k=-80

k=-80/-10

k=+8

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