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22=r-(-8)
We move all terms to the left:
22-(r-(-8))=0
We calculate terms in parentheses: -(r-(-8)), so:We get rid of parentheses
r-(-8)
We add all the numbers together, and all the variables
r+8
Back to the equation:
-(r+8)
-r-8+22=0
We add all the numbers together, and all the variables
-1r+14=0
We move all terms containing r to the left, all other terms to the right
-r=-14
r=-14/-1
r=+14
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