5k+21=7k-11

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Solution for 5k+21=7k-11 equation: 



5k+21=7k-11

We move all terms to the left:

5k+21-(7k-11)=0

We get rid of parentheses

5k-7k+11+21=0

We add all the numbers together, and all the variables

-2k+32=0

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

-2k=-32

k=-32/-2

k=+16

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