Respuesta:
para una suma de fracciones se multiplica N× D y D×N se suma N×N y D×D
[tex] \frac{1}{7} + \frac{1}{8} = \frac{15}{56} \\ 1 \times 8 = 8 \\ 7 \times 1 = 7 \\ 8 + 7 = 15 \\ 7 \times 8 = 56[/tex]
[tex] \frac{7}{13} + \frac{5}{10} = \frac{135}{130} \\ 7 \times 10 = 70 \\ 13 \times 5 = 65 \\ 70 + 65 = 135 \\ 13 \times 10 = 130 \\ [/tex]
[tex] \frac{7}{5} - \frac{1}{3} = \frac{16}{15} \\ 7 \times 3 = 21 \\ 5 \times 1 = 5 \\ 21 - 5 = 16 \\ 5 \times 3 = 15 \\ [/tex]
[tex] \frac{8}{7} - \frac{9}{11} = \frac{25}{77} \\ 8 \times 11 = 88 \\ 7 \times 9 = 63 \\ 88 - 63 = 25 \\ 7 \times 11 = 77[/tex]
yayayayya espero averte ayudado
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Respuesta:
para una suma de fracciones se multiplica N× D y D×N se suma N×N y D×D
[tex] \frac{1}{7} + \frac{1}{8} = \frac{15}{56} \\ 1 \times 8 = 8 \\ 7 \times 1 = 7 \\ 8 + 7 = 15 \\ 7 \times 8 = 56[/tex]
[tex] \frac{7}{13} + \frac{5}{10} = \frac{135}{130} \\ 7 \times 10 = 70 \\ 13 \times 5 = 65 \\ 70 + 65 = 135 \\ 13 \times 10 = 130 \\ [/tex]
[tex] \frac{7}{5} - \frac{1}{3} = \frac{16}{15} \\ 7 \times 3 = 21 \\ 5 \times 1 = 5 \\ 21 - 5 = 16 \\ 5 \times 3 = 15 \\ [/tex]
[tex] \frac{8}{7} - \frac{9}{11} = \frac{25}{77} \\ 8 \times 11 = 88 \\ 7 \times 9 = 63 \\ 88 - 63 = 25 \\ 7 \times 11 = 77[/tex]
yayayayya espero averte ayudado