20=1k+7

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Solution for 20=1k+7 equation: 



20=1k+7

We move all terms to the left:

20-(1k+7)=0

We add all the numbers together, and all the variables

-(k+7)+20=0

We get rid of parentheses

-k-7+20=0

We add all the numbers together, and all the variables

-1k+13=0

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

-k=-13

k=-13/-1

k=+13

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