1,2的倒数是1和1/2,他们的和是3/2。,1与2的和是3。
乘积为9/2,倒数为2/9。所以最后答案为2/9。
设甲为X千克。X*4/5=140*3/4所以X=131。25,所以甲为131。25千克
What time are you going home after school?
How long did you leave here?
数:3
英:When will you leave school after school?
How long have you leave here?