(9k+21)/2=8k

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Solution for (9k+21)/2=8k equation: 



(9k+21)/2=8k

We move all terms to the left:

(9k+21)/2-(8k)=0

We add all the numbers together, and all the variables

-8k+(9k+21)/2=0

We multiply all the terms by the denominator


-8k*2+(9k+21)=0

Wy multiply elements

-16k+(9k+21)=0

We get rid of parentheses

-16k+9k+21=0

We add all the numbers together, and all the variables

-7k+21=0

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

-7k=-21

k=-21/-7

k=+3

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