1.
a)4/3·5/7=20/21
b)1/6·9/8=9/48 (simplific prin 3) = 3/16
c)8/9·3/2=24/18 (simplific prin 3) = 8/6
2.
a)32/25·15/16= (simplificam 32 cu 16 si 25 cu 15) = 2/5·3/1=6/5
b)4 9/10 ·35/42 =49/10·35/42=(simplific 10 cu 35 ,adica prin 5 ,stii ce vreau sa spun...) 49/2·7/42 =49/2·1/6(am simplificat 7 cu 42)=49/12
c)2 13/16 ·2 10/27 =45/16 · 64/27 = 2880/432=(simplific prin 16)=180/27(simplific prin 9) = 20/3
3.
2 2/3 + 14/15·1 1/2 =8/3 + 14/15·3/2 = 8/3 +42/30 =
(amplific 8/3 cu 10)= 80/30+42/30=122/30=(simplific prin 2) =61/15
Sper ca te referi la exercitiile de unde scrie "Tema"
Scuze ca nu am scris pe foaie ,dar nu am la mine
