24/5x11/8十61/10÷8/5十13/10x11/8怎样简便算

如题所述

24/5x11/8十61/10÷8/5十13/10x11/8
=24/5*11/8+61/10*5/8+13/10*11/8
=11/8*(24/5+13/10)+61/10*5/8
=11/8*61/10+61/10*5/8
=61/10*(11/8+5/8)
=61/10*2
=61/5
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