用简便方法计算 12*(1\2-1\3-1\4) (11\12-5\7)*7\11 10又49\50*50 (2\7+3\8)*5.6
问题描述:
用简便方法计算 12*(1\2-1\3-1\4) (11\12-5\7)*7\11 10又49\50*50 (2\7+3\8)*5.6
答
用简便方法计算 12*(1\2-1\3-1\4) (11\12-5\7)*7\11 10又49\50*50 (2\7+3\8)*5.6