Question

Am si eu nevoie de ajutor la ex 2 va rog

Answer 1

a) 8 supra 2
b)12 supra 5
c)30 supra 12
d) 11 supra66
g)43 supra36
e si f nu pot acum scuze

Answer 2

2. a) 5/2+3/2=8/2=4
    b) 7/5+2/5+3/5=12/5 
    c) 5/4+5/6+5/12=  15/12+10/12+5/12=30/12=5/2
Aducem fractiile la acelasi numitor. Numitorul comun este 12. Am amplificat prima fractie cu 3 si a doua cu 2. Rezultatul l-am simplificat cu 6.
    d) 1/11+1/22+1/33=6/66+3/66+2/66=11/66=1/6
   e) 7/180+7/84+11/210=49/1260+ 105/1260+66+1260=220/1260=11/63
   f) 5/32+7/96+13/288=45/288+21/288+13+288=79/288
   g) 19/(3²×2)+5/(2²×3²)= 19/18+5/36=38/36+5/36=43/36