计算下面各题,能简便的用简便方法计算 5/9+3又1/6÷(3又1/4-1又2/3)×1又1/2

3.5×1又1/4+1.25×27/10+3.8/(4/5) 3.2/【(2又3/4-19/36)/(1/5+30%)』】

5/9+3又1/6÷(3又1/4-1又2/3)×1又1/2
=5/9+19/6*12/19*3/2
=5/9+3
=3又5/9

3.5×1又1/4+1.25×27/10+3.8/(4/5)
=1.25*(3.5+2.7+3.8)
=1.25*10
=12.5

3.2/【(2又3/4-19/36)/(1/5+30%)』】
=3.2/(40/9)
=0.72
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