(7/8+13/16)÷13/16
=(7/8+13/16)×16/13
=7/8×16/13+13/16×16/13
=14/13+1
=2又1/13
7/8与13/16的和除以13/16的简便计算
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(7/8+13/16)÷13/16
=(7/8+13/16)×16/13
=7/8×16/13+13/16×16/13
=14/13+1
=2又1/13