Question

三分之一m减二分之三n减六分之五n减六分之一m请问怎么算?过程.谢谢

Answer 1

1/3=2/6

2/3=4/6

2/6m-4/6n-5/6n-1/6m

=(2/6m-1/6m)-(4/6n+5/6n)

=1/6m-9/6n

又因为9/6n=3/2n

所以原式=1/6m-3/2n