5-k+12=20-45

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Solution for 5-k+12=20-45 equation: 



5-k+12=20-45

We move all terms to the left:

5-k+12-(20-45)=0

We add all the numbers together, and all the variables

-k+5+12-(-25)=0

We add all the numbers together, and all the variables

-1k+42=0

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

-k=-42

k=-42/-1

k=+42

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