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You enter an elevator and go down 7 floors.you exit on the 10 floor.write an equation you can use to find the floor where you entered the elevtor



Let the floor u got in be x
therefore x=17
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let your floor be= x

then after going down 7 floors your floor would be= x-7

now it says you exit on floor=10

hence, x-7=10

or x = 10+7


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