3/4x5/13+5/4x1/13简算
问题描述:
3/4x5/13+5/4x1/13简算
答
3/4x5/13+5/4x1/13
=3/4x5/13+1/4x5/13
=(3/4+1/4)x5/13
=1x5/13
=5/13