Răspuns:
Explicație pas cu pas:
[tex]a)2 \times \frac{3}{7} = \frac{6}{7} \\ [/tex]
[tex]2 \frac{3}{7} = \frac{2 \times 7 + 3}{7} = \frac{14 + 3}{7} = \frac{17}{7} \\ [/tex]
[tex]b)4 \times \frac{1}{8} = \frac{4}{8} = \frac{1}{2} \\ [/tex]
[tex]4 \frac{1}{8} = \frac{4 \times 8 + 1}{8} = \frac{32 + 1}{8} = \frac{33}{8} \\ [/tex]
[tex]c)3 \times \frac{2}{9} = \frac{6}{9} = \frac{2}{3} \\ [/tex]
[tex]3 \frac{2}{9} = \frac{3 \times 9 + 2}{9} = \frac{27 + 2}{9} = \frac{29}{9} \\ [/tex]
[tex]d)5 \times \frac{1}{4} = \frac{5}{4} \\ [/tex]
[tex]5 \frac{1}{4} = \frac{5 \times 4 + 1}{4} = \frac{20 + 1}{4} = \frac{21}{4} \\ [/tex]
[tex]e)7 \times \frac{1}{4} = \frac{7}{4} \\ [/tex]
[tex]7 \frac{1}{4} = \frac{7 \times 4 + 1}{4} = \frac{28 + 1}{4} = \frac{29}{4} \\ [/tex]
[tex]f)12 \times \frac{5}{6} = \frac{60}{6} = 10 \\ [/tex]
[tex]12 \frac{5}{6} = \frac{12 \times 6 + 5}{6} = \frac{72 + 5}{6} = \frac{77}{6} \\ [/tex]
