2k+5=7k+15

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



2k+5=7k+15

We move all terms to the left:

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

We get rid of parentheses

2k-7k-15+5=0

We add all the numbers together, and all the variables

-5k-10=0

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

-5k=10

k=10/-5

k=-2

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