5k-15=7k+2k

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Solution for 5k-15=7k+2k equation: 



5k-15=7k+2k

We move all terms to the left:

5k-15-(7k+2k)=0

We add all the numbers together, and all the variables

5k-(+9k)-15=0

We get rid of parentheses

5k-9k-15=0

We add all the numbers together, and all the variables

-4k-15=0

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

-4k=15

k=15/-4

k=-3+3/4

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