If 2x + 8 = 0, what justifies 2(x + 4) = 0?

Simplify 15(x - 4)(x -1)-3(x + 4)(x - 1) with steps

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?

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