16.2÷0.375-1.2×8/3 (要简算)
=16.2÷(375/1000)-1.2*8/3
=16.2×8/3-1.2×8/3
=8/3×(16.2-1.2)
=(8/3)×15
=8×5
=40
4.72+3/40-1.72(要简算)
=4.72-1.72+3/40
=3+3/40
=3又3/40
=123/40
甲是乙的1又3/5倍,而1又3/5=8/5,所以 乙:甲=5:8
16.2÷0.375-1.2×8/3 (要简算)
=16.2÷(375/1000)-1.2*8/3
=16.2×8/3-1.2×8/3
=8/3×(16.2-1.2)
=(8/3)×15
=8×5
=40
4.72+3/40-1.72(要简算)
=4.72-1.72+3/40
=3+3/40
=3又3/40
=123/40
甲是乙的1又3/5倍,而1又3/5=8/5,所以 乙:甲=5:8