Question

Ajutor,va rog Ajutatima​

Answer 1

Răspuns:

13)

a) 40 ÷2= 20 kg de faina

b) 1/ 3 ×60= 20 ( simplificat prin 3)

c)

3/5 ×100 = 60 m ( simplificam prin 5)

d)

2/6 ×72 = 24 ( simplificam prin 6 )

e)

4/8 × 72 = 36 ( simplificam prin 8)

12)

12/12 -a = 5/ 12

a= 12/12 - 5/12

a= 7/ 12

b -4/20 = 9/20

b= 9/20 +4/20

b = 13/20

24/100+c= 52/100

c = 52/100 - 24 /100

c= 28/100

15)

7/7- 5/7 = 2/7

30/35 + 5/ 35 = 35/35=1

19/19 -5/19= 14/19

5/10+4/10= 9/10