Răspuns:
[tex]a) \frac{2}{7} + \frac{5}{7} = \frac{7}{7} = 1[/tex]
[tex]b) \: \frac{3}{11} + \frac{6}{11} + \frac{2}{11} = \frac{11}{11} = 1[/tex]
[tex]c) \: \frac{1}{2} + \frac{1}{3} + \frac{1}{6} =\frac{ {1}^{3} }{2} + \frac{ {1}^{2} }{3} + \frac{1}{6} = \frac{3}{6} + \frac{2}{6} + \frac{1}{6} = \frac{6}{6} = 1[/tex]
Răspuns:
2/7+5/7=7/7=1 ; b) 11/11=1 ; c) (3/6+2/3+1/6=6/6=1
Explicație pas cu pas:
