Question

Ma puteti ajuta cu exercitiile de mai jos ?Va rog

Answer 1

1)2/6 amplificata cu 3⇒6/18
2)450/300 siplificata 10⇒45/30 cu 5⇒9/6 cu 3⇒3/2
3)2,(54)=(254-2)/99⇒252/99 siml.3⇒84/33 simpl.3⇒28/11
4)5/4=1.25        4/3=1,(3)⇒4/3>5/4
5) 1,(2)-1,2(3)-1,23-1.3
6) 5/4-2/3⇒n.c.12⇒(20-8)/12⇒12/12⇒1
7)21/38:7/2⇒21/38*2/7⇒3/19
8)5/2x=125/18⇒x=125*2/18*5⇒25/9
9)4/5-3/2*2/9⇒4/5-1/3⇒n.c.15⇒(12-5)/15⇒7/15