4(5+5k)+1=161

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Solution for 4(5+5k)+1=161 equation: 



4(5+5k)+1=161

We move all terms to the left:

4(5+5k)+1-(161)=0

We add all the numbers together, and all the variables

4(5k+5)+1-161=0

We add all the numbers together, and all the variables

4(5k+5)-160=0

We multiply parentheses

20k+20-160=0

We add all the numbers together, and all the variables

20k-140=0

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

20k=140

k=140/20

k=7

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