20-3k=6k-7

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Solution for 20-3k=6k-7 equation: 



20-3k=6k-7

We move all terms to the left:

20-3k-(6k-7)=0

We get rid of parentheses

-3k-6k+7+20=0

We add all the numbers together, and all the variables

-9k+27=0

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

-9k=-27

k=-27/-9

k=+3

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