Question

Номер 858 помогите пожалуйста!!!

Answer 1

A) (1/5 + 1/5) + (3/4 + 1/4) = 2/5 + 4/4 = 1 2/5

б) (11/12 + 1/12) + (7/10 + 3/100) = 12/12 + (70 + 3)/100 = 1 + 73/100 = 1 73/100

в)  (12/17 + 5/17) + (15/24 + 3/8) = 17/17 + (15 + 9)/24 = 1 + 24/24 =  2

г) (3/7 + 4/7) + (5/9 + 4/9) = 7/7 + 9/9 = 1 + 1=2

Answer 2

4/4+2/5=1 2/5
12/12+70/100+3/100=1 73/100
17/17+(15+9)/24=17/17+24/24=2
7/7+9/9=2