1) 7/48 - 5/36 = 7/48 - 10/72 = 7/48 - 5/36 = 7/48 - 10/72 = 7/48 - 15/72 = (76 - 154)/(48*6) = 42/288 - 60/288 = -18/288 = -1/16
Ответ: 1) -1/16
2) 23/44 - 21/55 = (2355 - 2144)/(44*55) = (1265 - 924)/(2420) = 341/2420 = 31/220
Ответ: 4) 31/220
1) 7/48 - 5/36 = 7/48 - 10/72 = 7/48 - 5/36 = 7/48 - 10/72 = 7/48 - 15/72 = (76 - 154)/(48*6) = 42/288 - 60/288 = -18/288 = -1/16
Ответ: 1) -1/16
2) 23/44 - 21/55 = (2355 - 2144)/(44*55) = (1265 - 924)/(2420) = 341/2420 = 31/220
Ответ: 4) 31/220