Răspuns :
[tex]a)2 \times \frac{1}{7} = \frac{2 \times 7 + 1}{7} = \frac{15}{7} [/tex]
[tex]b)3 \times \frac{2}{7} = \frac{3 \times 7 + 2}{7} = \frac{23}{7} [/tex]
[tex]c)4 \times \frac{3}{7} = \frac{4 \times 7 + 3}{7} = \frac{31}{7} [/tex]
[tex]a)2 \times \frac{1}{7} = \frac{2 \times 7 + 1}{7} = \frac{15}{7} [/tex]
[tex]b)3 \times \frac{2}{7} = \frac{3 \times 7 + 2}{7} = \frac{23}{7} [/tex]
[tex]c)4 \times \frac{3}{7} = \frac{4 \times 7 + 3}{7} = \frac{31}{7} [/tex]