Răspuns:
[tex]5 \times \frac{2}{3 } = parte \: intreaga = 5[/tex]
partea fractionara =
[tex] \frac{2}{3} [/tex]
[tex]5 \times \frac{2}{3} = \frac{5 \times 3 + 2}{3} = \frac{17}{3} [/tex]
[tex]7 \times \frac{1}{4} = partea \: imteaga = 7[/tex]
partea fractionara =
[tex] \frac{1}{7} [/tex]
[tex]7 \times \frac{1}{4} = \frac{7 \times 4 + 1}{4} = \frac{29}{4} [/tex]
[tex]9\times \frac{2}{7} = p.i. = 9 \: \: \: \: \: \: \: \: \: \: \: p.f. = \frac{2}{7} [/tex]
[tex]9 \times \frac{2}{7} = \frac{9 \times 7 + 3}{7} = \frac{66}{7} [/tex]
[tex]1 \times \frac{12}{13} = p.i. = 1 \: \: \: \: \: \: \: \: \: \: p.f. = \frac{12}{13} [/tex]
[tex]1 \times \frac{12}{13} = \frac{1 \times 13 + 12}{13} = \frac{25}{13} [/tex]
[tex]6 \times \frac{8}{9} = p.i. = 6 \: \: \: \: \: \: \: \: \: p.f. = \frac{8}{9} [/tex]
[tex]6 \times \frac{8}{9} = \frac{6 \times 9 + 8}{9} = \frac{62}{9} [/tex]
[tex]12 \times \frac{3}{8} = p.i. = 12 \: \: \: \: \: \: \: \: \: p.f. = \frac{3}{8} [/tex]
[tex]12 \times \frac{3}{8} = \frac{12 \times 8 + 3}{8} = \frac{99}{8} [/tex]
[tex]31 \times \frac{1}{10} = p.i. = 31 \: \: \: \: \: \: \: \: p.f. = \frac{1}{10} [/tex]
[tex]31 \times \frac{1}{10} = \frac{31 \times 10 + 1}{10} = \frac{311}{10} [/tex]
