解:
四又五分之二除以三分之一减一点四乘(一加三分之一)
=[4+(2/5)]÷(1/3)-1.4×[1+1/3]
=(4+0.4)×3-1.4×(4/3)
=4.4×3-(1.4×4)/3
=13.2-(5.6/3)
=(13.2×3-5.6)/3
=(39.6-5.6)/3
=34/3
=11又3分之1
四又五分之二除以三分之一减一点四乘(一加三分之一)
=22/5÷1/3-1.4x(1+1/3)
=4.4x3-1.4x4/3
=13.2-5.6/3
=39.6/3-5.6/3
=34/3
=11又1/3
(22/5×3)-[1.4×(1+1/3)]?