20-r=8.43

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Solution for 20-r=8.43 equation: 



20-r=8.43

We move all terms to the left:

20-r-(8.43)=0

We add all the numbers together, and all the variables

-1r+11.57=0

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

-r=-11.57

r=-11.57/-1

r=11+0.57/1

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