87−37+47=?\frac87-\frac37+\frac47=?78−73+74=? A5/7B12/7C8/7D9/7Answer: D. 9/7 Read Explanation: 87−37+47\frac87-\frac37+\frac4778−73+74 =8−3+47=\frac{8-3+4}{7}=78−3+4 =97=\frac97=79 Read more in App