1.8-1/(0.75+1/3)*13/8用简便方法计算
问题描述:
1.8-1/(0.75+1/3)*13/8用简便方法计算
答
1.8-1/(9/12+4/12)*39/24
1.8-12/13*39/24
1.8-2/3
1.8-1.5
0.3