Which expression is the simplified form of (4r - s)- (r + 2s) - (5r - 3s)​

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The weight v of an object on venus varies directly with its weight e on earth. a person weighing 120 lb on earth would weigh 106 lb on venus. how much would a person weighing 150 lb on earth weigh on venus?

Def rotates 90 clockwise about point a to create d’ e’ f’. therefore, which equation must be true ?