(3又3分之2-2分1)÷(1又6分之1+2分之1)
=19/6*3/5
=1.9
14.25×1又5分之4+1.8×4分之3
=14.25*1.8+1.8*3/4
=1.8*(14.25+0.75)
=1.8*15
=27
6.3÷[(4又2分之1-0.07×50)÷1又2分之1]
=6.3/[(4.5-3.5)*2/3]
=6.3/2/3
=6.3*3/2
=9.45
(3又3分之2-2分1)÷(1又6分之1+2分之1)
=19/6*3/5
=1.9
14.25×1又5分之4+1.8×4分之3
=14.25*1.8+1.8*3/4
=1.8*(14.25+0.75)
=1.8*15
=27
6.3÷[(4又2分之1-0.07×50)÷1又2分之1]
=6.3/[(4.5-3.5)*2/3]
=6.3/2/3
=6.3*3/2
=9.45