1/6+7/8-3/5=20/120+105/120-72/120=53/120希望采纳,谢谢
分数计算1/6+7/8-3/5=20/120+105/120-72/120=53/120
1/6+7/8-3/5=4/24+21/24-3/5=25/24-3/5=125/120-72/120=53/120