4(1+8k)-7k=-121

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Solution for 4(1+8k)-7k=-121 equation: 



4(1+8k)-7k=-121

We move all terms to the left:

4(1+8k)-7k-(-121)=0

We add all the numbers together, and all the variables

4(8k+1)-7k-(-121)=0

We add all the numbers together, and all the variables

-7k+4(8k+1)+121=0

We multiply parentheses

-7k+32k+4+121=0

We add all the numbers together, and all the variables

25k+125=0

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

25k=-125

k=-125/25

k=-5

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