Question

446. Выполните действия: ¹-1); 5 1) 3 4 +1 8 3 2) -7- 16 4 -4 1 -5 15 2 3 C 3) -3 2 4) - 3 - 7 3 5 +2 4 20 -(-3 -3 7 18 - IS
дам 70 баллов​

Answer 1

Пошаговое объяснение:

№1

1) 4 5/16 + 1 1/4 = 4 5/16 + 1 4/16 = 5 9/16

2) 3 1/8 - 5 9/16 = 3 2/16 - 5 9/16 = -2 7/16

№2

1) -4 1/15 - 5 2/3 = -4 1/15 - 5 10/15 = -9 11/15

2) -7 3/5 - (-9 11/15) = -7 3/5 + 9 11/15 = -7 9/15 + 9 11/15 = 2 2/15

№3

1) 5 3/4 + 2 7/20 = 5 15/20 + 2 7/20 = 7 22/20 = 7 11/10 = 8 1/10

2) -3 1/2 - 8 1/10 = -3 5/10 - 8 1/10 = -11 6/10 = -11 3/5

№4

1) -3 7/18 - 5 8/9 = -3 7/18 - 5 16/18 = -8 23/18 = -9 5/18

2) -1/3 - (-9 5/18) = -1/3 + 9 5/18 = -6/18 + 9 5/18 = -6/18 + 8 23/18 = 8 17/18