1×3/2×4/3×5/4×6/5×7/6×8/7=4
你只要把它变形一下就能得到上式,然后就约分就可以得到1×8/2=4所有结果是4
1÷2/3÷3/4÷4/5÷5/6÷6/7÷7/8
等于1×3/2×4/3×5/4×6/5×7/6×8/7
等于8
=1x3/2x4/3x5/4x6/5x7/6x8/7
=4
a除以b,等于a乘b的倒数
1÷(2÷3)÷(3×4)÷(4÷5)÷(5÷6)÷(6÷7)÷(7÷8)
=1÷2×3÷3×4÷4×5÷5×6÷6×7÷7×8
=(1÷2)×(3÷3)×(4÷4)×(5÷5)×(6÷6)×(7÷7)×8
=0.5×8
=4
1*3/2*4/3*5/4*6/5*7/6*8/7=8/2=4