48×(5/12+1/8)÷2/3(过程)

问题描述:

48×(5/12+1/8)÷2/3(过程)

48×(5/12+1/8)÷2/3
=48×(5/12+1/8)×3/2
=48×3/2×(5/12+1/8)
=72×(5/12+1/8)
=72×5/12+72×1/8
=30+9
=39

48×(5/12+1/8)÷2/3
=(48×5/12+48×1/8)÷2/3
=(20+6)×3/2
=26×3/2
=39