⒈计算下面各题
(1/6-1/8)÷5/6 45×5/9÷9/5 (36/5+36/7)÷(2/5+2/7)
(1/6-1/8)÷5/6
=[(1/6-1/8)×24]÷(5/6×24)
=(4-3)÷20
=1/20
45×5/9÷9/5
=25×5/9
=125/9
(36/5+36/7)÷(2/5+2/7)
=36×(7+5)÷(14+10)
=36×12÷24
=18
(1/6-1/8)÷5/6
=(4/24-3/24)x6/5
=1/24x6/5
=1/20
45x5/9÷9/5
=25x5/9
=125/9
(36/5+36/7)÷(2/5+2/7)
=35*(36/5+36/7)÷【35*(2/5+2/7)】
=(252+180)÷(14+10)
=432÷24
=18
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