(2/3-7/12)÷(拿仿2/橡敏槐7+1/8)=(8/12-7/12)÷(16/56+7/56)=1/12÷23/56=1/12X56/梁友23=14/69=69分之14
(2/3-7/12)÷(2/握好吵7+1/8)=(8/12-7/12)÷(16/袜返56+7/56)=1/段侍12÷23/56=1/12×56/23=14/69
给犯过错复方甘草吃吃吃