4k+5k-7k=20

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Solution for 4k+5k-7k=20 equation: 



4k+5k-7k=20

We move all terms to the left:

4k+5k-7k-(20)=0

We add all the numbers together, and all the variables

2k-20=0

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

2k=20

k=20/2

k=10

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