根据不理的基本性质,两个内项的积等于两个外项的积。8/7×7/8=5×0.2=1所以,8/7:0.2=5:7/8 8/7:5=0.2:7/87/8:0.2=5:8/77/8:5=0.2:8/70.2:7/8=8/7:50.2:8/7=7/8:55:8/7=7/8:0.25:7/8=8/7:0.2
5:8/7=7/8:0.2
5:8/7=7/8:0.2