解:
(-1.25)除2又1/12
=-1.25÷25/12
=-1.25x12/25
=-0.6
0除(-5)乘108
=0 (0除以任何数都为0)
-4除2/3乘3/2除1/4
=-4×3/2×3/2×4
=-6×6
=-36
2除(-3/7)乘4/7除(-8/3)
=2×7/3×4/7×3/8
=2×(7/3×4/7×3/8)
=2×1/2
=1
-1.25=-5/4 2又1/12=25/12
(-1.25)除2又1/12
=-5/4÷25/12
=-5/4×12/25
=-3/5
0除(-5)乘108
=0
-4除2/3乘3/2除1/4
=-4×3/2×3/2×4
=-36
2除(-3/7)乘4/7除(-8/3)
=2×7/3×4/7×3/8 【先解决正负号问题,负负得正】
=1