3k-4=k+21

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Solution for 3k-4=k+21 equation: 



3k-4=k+21

We move all terms to the left:

3k-4-(k+21)=0

We get rid of parentheses

3k-k-21-4=0

We add all the numbers together, and all the variables

2k-25=0

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

2k=25

k=25/2

k=12+1/2

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