Răspunsuri

2014-10-18T23:43:28+03:00
H) -1/3*3/5*5/7=-3/15*5/7=simplificam=-1/7 i) (-1/3)*(-1/4)*(-1/5)=1/12*(-1/4)=-1/48 b). aducem la acelasi numitor ce este in paranteza =(-2/36+3/36)*(-5/6)=1/36*(-5/6)=-5/216 c)=(-7/39+33/39)*(-3/2)=26/39*(-3/2)=-13/13=-1 d)=(-3/42+8/42)*11/5=5/42*11/5=11/42 e) =(-8/29)*(-14/48-15/48)=(-8/29)*(-29/58)=8/58=4/29 f)=(-3)*(1/60-16/60)=(-3)*(-15/60)=15/20=3/4