1/8*7/3+0.125*14/3+3*0.125

1/8*7/3+0.125*14/3+3*0.125
1/8*7/3+0.125*14/3+3*0.125

1/8*7/3+0.125*14/3+3*0.125
1/8*7/3+0.125*14/3+3*0.125
=1/8x7/3+1/8x14/3+1/8x3
=1/8x(7/3+14/3+3)
=1/8x10
=5/4
在右上角点击【评价】,然后就可以选择【满意,问题已经完美解决】了.