k/5-13=k-21

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Solution for k/5-13=k-21 equation: 



k/5-13=k-21

We move all terms to the left:

k/5-13-(k-21)=0

We get rid of parentheses

k/5-k+21-13=0

We multiply all the terms by the denominator


k-k*5+21*5-13*5=0

We add all the numbers together, and all the variables

k-k*5+40=0

Wy multiply elements

k-5k+40=0

We add all the numbers together, and all the variables

-4k+40=0

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

-4k=-40

k=-40/-4

k=+10

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