1) (- 11/18 + 33/45) / (35/81 - 19/27) 2) - 4 1/7 + 2 1/4 * (- 11 2/9 - (- 5, 4) / (9/25))

1) 11/18 + 33/45 = (511)/(518) + (311)/(315) = 55/90 + 33/45 = (511+633)/(5*18) = 715/900

35/81 - 19/27 = (57)/(99) - (319)/(39) = 35/81 - 57/81 = -22/81

(- 11/18 + 33/45) / (35/81 - 19/27) = (715/900) / (-22/81)

= (715/900) * (-81/22) = (-51113)/(5182) = -143/180

В-дь= -143/180

2) (-5.4) / (9/25) = (-54/10) / (9/25) = (-54/10) * (25/9) = -150/3 = -50

2 1/4 * (-11 2/9 - (-5.4) / (9/25)) = 2 1/4 * (-11 2/9 - (-50)) = 2 1/4 * (-11 2/9 + 50) = 2 1/4 * (38 7/9)

4 1/7 = - 29/7

2 1/4 = 9/4

38 7/9 = 349/9

29/7 + 9/4 * 349/9

29/7 + (9 * 349)/(4 * 9) = -29/7 + 349/4

-29/7 * 4/4 = -116/28

349/4 * 7/7 = 2443/28

116/28 + 2443/28 = 2327/28

В-дь= 2327/28