(9/8除以6+1/8X7/6)除以(2-4/3);
=(9/8*1/6+1/8*7/6)÷2/3
=1/6*(9/8+7/8)*3/2
=1/6*16/8*3/2
=1/2
(9又2/7+7又2/9)除以(5/7+5/9)
(65/7+65/9)÷(5/7+5/9)
=65*(1/7+1/9)÷5/(1/7+1/9)
=13
(9/8除以6+1/8X7/6)除以(2-4/3);
=(9/8*1/6+1/8*7/6)÷2/3
=1/6*(9/8+7/8)*3/2
=1/6*16/8*3/2
=1/2
(9又2/7+7又2/9)除以(5/7+5/9)
(65/7+65/9)÷(5/7+5/9)
=65*(1/7+1/9)÷5/(1/7+1/9)
=13