а) x = 9/12 - 11/43 = 3/4 - 11/43 = (343-114)/(4*43) = (129-44)/172 = 85/172.Ответ: x = 85/172.
б) y = 21/34 - 16/51 = (2151-1634)/(34*51) = (1071-544)/1734 = 527/1734.Ответ: y = 527/1734.
в) a = 21/78 - 4/39 = (2139-478)/(78*39) = (819-312)/3042 = 507/3042 = 169/1014.Ответ: a = 169/1014.
г) x = 45/62 - 36/155 = (45155-3662)/(62*155) = (6975-2232)/9610 = 4743/9610.Ответ: x = 4743/9610.
д) y = 173/178 - 77/89 = (17389-77178)/(178*89) = (15497-13666)/15842 = 1831/15842.Ответ: y = 1831/15842.
е) a = 19/21 - 14/210 = (1910-1421)/(21*10) = (190-294)/210 = -104/210 = -52/105.Ответ: a = -52/105.
а) x = 9/12 - 11/43 = 3/4 - 11/43 = (343-114)/(4*43) = (129-44)/172 = 85/172.
Ответ: x = 85/172.
б) y = 21/34 - 16/51 = (2151-1634)/(34*51) = (1071-544)/1734 = 527/1734.
Ответ: y = 527/1734.
в) a = 21/78 - 4/39 = (2139-478)/(78*39) = (819-312)/3042 = 507/3042 = 169/1014.
Ответ: a = 169/1014.
г) x = 45/62 - 36/155 = (45155-3662)/(62*155) = (6975-2232)/9610 = 4743/9610.
Ответ: x = 4743/9610.
д) y = 173/178 - 77/89 = (17389-77178)/(178*89) = (15497-13666)/15842 = 1831/15842.
Ответ: y = 1831/15842.
е) a = 19/21 - 14/210 = (1910-1421)/(21*10) = (190-294)/210 = -104/210 = -52/105.
Ответ: a = -52/105.