【8分之7-(3分之1+6分之1) 】除以4分之9简便计算
问题描述:
【8分之7-(3分之1+6分之1) 】除以4分之9简便计算
答
[7/8-(1/3+1/6)]÷9/4
=[7/8-(2/6+1/6)]÷9/4
=[7/8-1/2]÷9/4
=[7/8-4/8]÷9/4
=(3/8)÷9/4
=(3/8)×4/9
=1/6
答
=(7/8-1/2)*(4/9)
=(7/8-4/8)*(4/9)
=(3/8)*(4/9)
=1/6