3(5k+2)=21

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Solution for 3(5k+2)=21 equation: 



3(5k+2)=21

We move all terms to the left:

3(5k+2)-(21)=0

We multiply parentheses

15k+6-21=0

We add all the numbers together, and all the variables

15k-15=0

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

15k=15

k=15/15

k=1

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