-2(10r-2)=84

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Solution for -2(10r-2)=84 equation:



-2(10r-2)=84
We move all terms to the left:
-2(10r-2)-(84)=0
We multiply parentheses
-20r+4-84=0
We add all the numbers together, and all the variables
-20r-80=0
We move all terms containing r to the left, all other terms to the right
-20r=80
r=80/-20
r=-4

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