3/4+7/18=41/363/4+11/36=19/183/4+132/16=144/16=97/6-4/5 =(7×5-4×6)/(6×5)=11 /307/6-6/10=(7×10-6×6)/(6×10)=17 / 30 7/6-7/8=(7×4-7×3 )/24=7 /24 理解请及时采纳!!!
3/4+7/18=41/363/4+11/36=19/183/4+132/16=97/6-4/5=11/307/6-6/10=17/307/6-7/8=7/24