Răspuns:
a) [tex]\frac{8}{3}[/tex]
b) 3
c) 1
d) [tex]\frac{1}{3}[/tex]
e) [tex]\frac{13}{36}[/tex]
f) [tex]\frac{11}{28}[/tex]
Explicație pas cu pas:
a) [tex]\frac{1}{3} + \frac{7}{3} = \frac{1+7}{3} = \frac{8}{3}[/tex]
b) [tex]\frac{9}{4} + \frac{3}{4} = \frac{9+3}{4} = \frac{12}{4} = 3[/tex]
c) [tex]\frac{5}{11} + \frac{6}{11} = \frac{5+6}{11} = \frac{11}{11} = 1[/tex]
d) [tex]\frac{8}{9} - \frac{5}{9} = \frac{8-5}{9} = \frac{3}{9} = \frac{1}{3}[/tex]
e) [tex]\frac{1}{12} + \frac{1}{4} + \frac{1}{36} = \frac{1*3}{36} + \frac{1*9}{36} + \frac{1}{36} = \frac{3+9+1}{36} = \frac{13}{36}[/tex]
f) [tex]\frac{5}{28} + \frac{3}{14} = \frac{5}{28} + \frac{3*2}{28} = \frac{5+6}{28} = \frac{11}{28}[/tex]
