Răspuns:
1. a) subunitare : [tex]\frac{5}{6}[/tex]
b) echiunitare: [tex]\frac{5}{5} , \frac{6}{6}[/tex]
c) supraunitare: [tex]\frac{6}{5} ,\frac{7}{5} , \frac{7}{6}[/tex]
2. in imagine
3. [tex]\frac{34}{7} = 4\frac{6}{7}[/tex] [tex]5\frac{3}{8} = \frac{5*8+3}{8} =\frac{43}{8}[/tex]
4. a) [tex]\frac{3*5}{4*5} =\frac{15}{20}[/tex]
b) amplificata cu 3 ( 2*3= 6 si 7*3= 21)
c) amplificata cu 3 [tex]\frac{4}{5}= \frac{12}{15}[/tex]
