-20r+-20r-4=7

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Solution for -20r+-20r-4=7 equation: 



-20r+-20r-4=7

We move all terms to the left:

-20r+-20r-4-(7)=0

determiningTheFunctionDomain
-20r-20r-4-7+=0

We add all the numbers together, and all the variables

-40r=0

r=0/-40

r=0

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