78-5k=4k+15

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Solution for 78-5k=4k+15 equation: 



78-5k=4k+15

We move all terms to the left:

78-5k-(4k+15)=0

We get rid of parentheses

-5k-4k-15+78=0

We add all the numbers together, and all the variables

-9k+63=0

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

-9k=-63

k=-63/-9

k=+7

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