-7(5-7k)=161

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Solution for -7(5-7k)=161 equation: 



-7(5-7k)=161

We move all terms to the left:

-7(5-7k)-(161)=0

We add all the numbers together, and all the variables

-7(-7k+5)-161=0

We multiply parentheses

49k-35-161=0

We add all the numbers together, and all the variables

49k-196=0

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

49k=196

k=196/49

k=4

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