Question

brainly cate exercitii poti rezolva in 10 minute? calculeaza: a)1/2 : 1/4= b) 3/5: 1/25 c) 7/12 : 14/3 d) 11/5 : 2 e) 14/3 : 7 f) 15 : 3/8 g) 2 1/3 : 7/9 h) 3 1/10 : 10 i) 12 : 1 1/5 j) 5 1/2 : 8 1/8 (te rog repedee)

Answer 1

Răspuns:

a)1/2 : 1/4= 1/2·4/1=4/2=2

b) 3/5: 1/25 =3/5·25/1=75/5=15

c) 7/12 : 14/3 =7/12·3/14=1/8

d) 11/5 : 2 =11/5·1/2=11/10

e) 14/3 : 7 =14/3·1/7=2/3

f) 15 : 3/8 - 15/1·8/3=40

g) 2 1/3 : 7/9 = (2·3+1)/3·9/7=7/3·9/7=3

h) 3 1/10 : 10 =(3·10+1)/10·1/10=31

i) 12 : 1 1/5 = 12/1: (1·5+1)/5=12/1·5/6=10

j) 5 1/2 : 8 1/8 = (5·2+1)/2:(8·8+1)/8=11/2:65/8=12/2·8/65=48/65