Question

8/5 ori 10/3
4/5 la a doua
5/8:3/4
(1intreg 3/4+27/8:9/2)ori 14/15

Answer 1

8/5*10/3=8*10/5*3= se simplifica 10 cu 5 si ramane 2 si 8 cu 2 si ramane 4
=4/3
4/5^2=16/25
5/8:3/4= 5/8*4/3= se simplifica 8 cu 4 si ramne 2=5*2/3=10/3
1intreg 3/4+27/8:9/2)ori 14/15=)3+4/4+27/2*4 :9/2)14/15=7/4+(27/2*4)*2/9)*7*2/3*5=
=(7/4+3/4)*7*2/3*5=10/2*14/15=2/2*7/3=7/3

Answer 2

8 /5 * 10/3 = 80/15  iar  daca  simplificam prin  5 ramene : 16/3 
(4/5)²= 16/25
5/8 : 3/4 = 5/8*4/3 = 20/24 = 10/12 = 5/6
(7/4+27/8*2/9 ) * 14/15 = ( 7/4 + 3/4)*14/15 ( in interiorul  parantezei  am  simplificat  pe  diagonala ) = 10/4*14/15= 7/6 ( simplifici  pe  diagonala )