21k+19=28k+12

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Solution for 21k+19=28k+12 equation: 



21k+19=28k+12

We move all terms to the left:

21k+19-(28k+12)=0

We get rid of parentheses

21k-28k-12+19=0

We add all the numbers together, and all the variables

-7k+7=0

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

-7k=-7

k=-7/-7

k=1

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