Răspuns:
7.
[tex]2\frac{3}{5} =\frac{2*5+3}{5} =\frac{13}{5}[/tex]
[tex]-5\frac{2}{7} =-\frac{5*7+2}{7} =-\frac{37}{7}[/tex]
[tex]-1\frac{7}{9} =-\frac{1*9+7}{9} =\frac{16}{9}[/tex]
[tex]13\frac{5}{4} =\frac{13*4+5}{4} =\frac{57}{4}[/tex]
[tex]21\frac{5}{6} =\frac{21*6+5}{6} =\frac{131}{6}[/tex]
8.
[tex]\frac{3}{2} =3:2=1 rest 1=1\frac{1}{2}[/tex]
[tex]\frac{11}{4} =11:4=2rest 3=2\frac{3}{4}[/tex]
[tex]-\frac{13}{5} =-13:5=-(2 rest 3)=-2\frac{3}{5}[/tex]
[tex]\frac{27}{11} =27:11=2 rest 5=2\frac{5}{11}[/tex]
[tex]-\frac{39}{13} =-39:13=-3[/tex]
[tex]\frac{48}{12} =48:12=4[/tex]
[tex]\frac{79}{23} =79:23=3 rest 10=3\frac{10}{23}[/tex]
[tex]\frac{205}{100} =205:100=2 rest 5=2\frac{5}{100}=2\frac{1}{20}[/tex]
Explicație pas cu pas:
