3/8×7+1÷8/3 3/5-3/7+2/5-4/7 (1/125+4/5)×125 1/2+93/8×7+1÷8/33/5-3/7+2/5-4/7(1/125+4/5)×1251/2+9/20÷9/10-5/8

问题描述:

3/8×7+1÷8/3 3/5-3/7+2/5-4/7 (1/125+4/5)×125 1/2+9
3/8×7+1÷8/3
3/5-3/7+2/5-4/7
(1/125+4/5)×125
1/2+9/20÷9/10-5/8

3/8×7+1÷8/3=3/8x7+1x3/8=3/8x(7+1)=3/8x8=33/5-3/7+2/5-4/7=(3/5+2/5)-(3/7+7/7)=1-1=0(1/125+4/5)×125=1/125x125+4/5x125=1+100=1011/2+9/20÷9/10-5/8=1/2+1/2-5/8=1-5/8=3/8如还有新的问题,请不要追问的形...