1/3+3/4+2/5+5/7+7/8+9/20+10/21+11/24+19/35 求哪位大虾来解 5
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=(1/3+5/7+10/21)+(2/5+9/20)+(3/4+7/8+11/24)+19/35
=(7+15+10)/21+(8+9)/20+(18+21+11)/24+19/35
=32/21+17/20+50/24+19/35
=32/21+25/12+17/20+19/35
=(32/7+25/4)/3+(17/4+19/7)/5
=(128+175)/(28*3)+(119+76)/(28*5)
=(303)/(28*3)+(195)/(28*5)
=101/28+39/28
=140/28
=5
=(7+15+10)/21+(8+9)/20+(18+21+11)/24+19/35
=32/21+17/20+50/24+19/35
=32/21+25/12+17/20+19/35
=(32/7+25/4)/3+(17/4+19/7)/5
=(128+175)/(28*3)+(119+76)/(28*5)
=(303)/(28*3)+(195)/(28*5)
=101/28+39/28
=140/28
=5
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