91/3+991/3+9991/3+22/3怎样简便
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![91/3+991/3+9991/3+22/3怎样简便](/uploads/image/z/1240039-55-9.jpg?t=91%2F3%2B991%2F3%2B9991%2F3%2B22%2F3%E6%80%8E%E6%A0%B7%E7%AE%80%E4%BE%BF)
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91/3+991/3+9991/3+22/3怎样简便
91/3+991/3+9991/3+22/3怎样简便
91/3+991/3+9991/3+22/3怎样简便
91/3+991/3+9991/3+22/3=3691+22/3=3698又1/3
90/3+990/3+9990/3+(22+1+1)/3+1/3=30+330+3330+8+1/3