Question

二分之一乘以十五分之一加上三分之一乘以二分之一

2/1×15/1+3/1×2/1简便算法，要用地等式，好复杂啊，请大家帮帮忙！

Answer 1

2/1×15/1+3/1×2/1
=2/1×(15/1+3/1)
=2/1×15/6
=2/1×5/2
=5/1

结果是5分之1，很难认同你这种分式的写法。。。

Answer 2

=1/2 * (1/15 + 1/3 )
=1/2 * (1/15 + 5/15 )
=1/2 * 6/15
=1/5

Answer 3

2/1×15/1+3/1×2/1
=2/1×(15/1+3/1)
=2/1×(15/1+15/5)
=2/1×15/6
=15/3
=5/1

Answer 4

1/2*1/15+1/3*1/2=1/2(1/15+1/3)=1/2(1/15+5/15)=1/2**2/5=1/5