-20+3k=15-4k

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Solution for -20+3k=15-4k equation: 



-20+3k=15-4k

We move all terms to the left:

-20+3k-(15-4k)=0

We add all the numbers together, and all the variables

3k-(-4k+15)-20=0

We get rid of parentheses

3k+4k-15-20=0

We add all the numbers together, and all the variables

7k-35=0

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

7k=35

k=35/7

k=5

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