Verified answer

Пошаговое объяснение:

№1

1) -10 1/2 * 14/15 = -21/2 * 14/15 = -7/1 * 7/5 = -49/5 = -9 4/5

2) -9 4/5 + 36/45 = -9 4/5 + 4/5 = -9

3) -9 * (-1 7/9) = -9 * (-16/9) = -1 * (-16/1) = 16/1 = 16

№2

2 1/7 * |х - 7| = 4 1/6

|х - 7| = 4 1/6 : 2 1/7

|х - 7| = 25/6 : 15/7

|х - 7| = 25/6 * 7/15

|х - 7| = 5/6 * 7/3

|х - 7| = 35/18

|х - 7| = 1 17/18

1)

х - 7 = -1 17/18

х = -1 17/18 + 7

х = -1 17/18 + 6 18/18

х1 = 5 1/18

2)

х - 7 = 1 17/18

х = 1 17/18 + 7

х2 = 8 17/18