4k+20=45-k

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Solution for 4k+20=45-k equation: 



4k+20=45-k

We move all terms to the left:

4k+20-(45-k)=0

We add all the numbers together, and all the variables

4k-(-1k+45)+20=0

We get rid of parentheses

4k+1k-45+20=0

We add all the numbers together, and all the variables

5k-25=0

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

5k=25

k=25/5

k=5

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