Question

помогите решить и разобраться

Answer 1

2/5 + ( -1/8) = 2/5 - 1/8 = (16 - 5) / 40 = 11/40

-17 4/17 + 10 1/17 = - (17 4/17 - 10 1/17) = - 7 3/17

-11 + 3/5 = - (11 - 3/5) = -10 2/5

1 2/7 - 2 5/8 = 9/7 - 21/8 = (72 - 147) / 56 = - 75/56 = -1 19/56

6 1/6 + ( -13 3/4) = 37/6 - 55/4 = (74-165) / 12 = -91/12 = -7 7/12

1/12 - 9/48 = (4-9) / 48 = -5/48

2 1/3 - 3 1/2 = 7/3 - 7/2 = (14-21) / 6 = -7/6 = -1 1/6

-1,5 + 0,7 + 1,9 - 22,8 = 0,7 + 1,9 - 1,5 - 22,8 = 2,6 - 1,5 - 22,8 = 1,1 - 22,8 = -21,7

Answer 2

Ответ:11/40, -7 3/17,-10 2/5,-1 19/56 ,-7 7/12, -5/48, -1 1/6, -21,7

Пошаговое объяснение:

2/5 + ( -1/8) = 2/5 - 1/8 = (16 - 5) / 40 = 11/40

-17 4/17 + 10 1/17 = - (17 4/17 - 10 1/17) = - 7 3/17

-11 + 3/5 = - (11 - 3/5) = -10 2/5

1 2/7 - 2 5/8 = 9/7 - 21/8 = (72 - 147) / 56 = - 75/56 = -1 19/56

6 1/6 + ( -13 3/4) = 37/6 - 55/4 = (74-165) / 12 = -91/12 = -7 7/12

1/12 - 9/48 = (4-9) / 48 = -5/48

2 1/3 - 3 1/2 = 7/3 - 7/2 = (14-21) / 6 = -7/6 = -1 1/6

-1,5 + 0,7 + 1,9 - 22,8 = 0,7 + 1,9 - 1,5 - 22,8 = 2,6 - 1,5 - 22,8 = 1,1 - 22,8 = -21,7

вроде бы так