Question

va roggg ce stiti ce nu stiti nu faceti dau coroana

Answer 1

I.
1. sfertul
2. egal
3. 9/100 (9 supra 100)

II.
1. b)
2. c)

III.
1. (2+2/5+3/5)-(9/5+1/5)+24/5 (amplifici doiul din prima paranteza cu 5)
= (10/5+5/5)-10/5+24/5
=15/5-10/5+24/5
=5/5+24/5
=25/5

2. 3+x/9 < 1
x=0,1,2,3,4,5
3+0/9=3/9 < 1 ... 3+5/9=8/9 < 1

x-1/4 < 1
x=2,3,4
2-1/4=1/4 < 1 , 3-1/4=2/4 <1 ,4-1/4=3/4 < 1

1 > 1/8+z/8+2/8
z=0,1,2,3,4
1 > 1/8+0/8+2/8. 1 > 1/8+4/8+2/8
....
1 > 3/8 1 > 7/8

3. 8/10-(9/10-x) = 4/10
9/10-x = 8/10-4/10
9/10-x = 4/10
9/10-4/10 = x
5/10 = x