Question

помогите ребзя пож!!!!!!!!!!!!!!!!!!!

Answer 1

1)-¼+³/7= -7/28+12/28= 5/28
2)9/13 - 2/5=45/65 - 26/65= 19/65
3)-20/21 + ⅓= -20/21 +7/21 = -13/21
4) -8 9/14 + 3 3/5=
= -121/14 + 18/5= - 605/70 + 262/70=
= - 343/70
Дальше по аналогии :
5)152/36=76/18=38/9
6)550/36=275/18
7)13 23/35
8) 134/45
9) - 71/24
10)178/72=89/36
11) 107/30
12)767/132