1=43-2k

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Solution for 1=43-2k equation: 



1=43-2k

We move all terms to the left:

1-(43-2k)=0

We add all the numbers together, and all the variables

-(-2k+43)+1=0

We get rid of parentheses

2k-43+1=0

We add all the numbers together, and all the variables

2k-42=0

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

2k=42

k=42/2

k=21

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