Question

.помогите пожалуйста ​

Answer 1

Ответ:

Пошаговое объяснение:

1) (-5/9 + 14/15) : (-17/30) = (-50/90 + 84/90) : (-17/30) = 34/90 : (-17/30) = -34/51

2) (5/18 - (-11/27)) : (-2(5/10)) = (15/54 + 22/54) : (-2(5/10)) = 37/54 : (-2(5/10)) = 185/675 = 37/135

3) (11/18 - 17/24) : (-5/18 + 4/15) = (44/72 - 51/24) : (-25/90 + 24/90) = -7/90 : (-1/90) = 7

4) -4(5/6) + 3(3/23) * (-11(4/9) - (-3(6/10)) : 9/35) = -4(5/6) + 3(3/23) * (-11(4/9) + 21/2) = -4(5/6) + 3(3/23) * (-17/18) = -4(5/6) - 68/23 = -667/138 - 408/138 = -1075/138 = -7(109/138)