Question

Помогите срочно!!!!!
Срочно!!! Даю 4O Балоов!!!!!!

Answer 1

Пошаговое объяснение:

№3

1.

1) -42 + 75 = 33

2) 33 + (-14) = 33 - 14 = 19

3) 19 + (-26) = 19 - 26 = -7

4) -7 + 56 = 49

2.

1) 12 + (-20) = 12 - 20 = -8

2) -8 - (-11) = -8 + 11 = 3

3) 3 - (-6) = 3 + 6 = 9

4) 9 - 10 = -1

3.

1) 3 5/12 - (-1 1/3) = 3 5/12 + 1 1/3 = 3 5/12 + 1 4/12 = 4 9/12 = 4 3/4

2) 4 3/4 + (-4 3/8) = 4 3/4 - 4 3/8 = 4 6/8 - 4 3/8 = 3/8

№4

-13,24 + в + 4,9 + 8,24 + (-4,9) =

-13,24 + в + 4,9 + 8,24 - 4,9 = -5 + в

в = 3 4/9

-5 + в = -5 + 3 4/9 = -4 9/9 + 3 4/9 = -1 5/9