Question

Me ayudan porfa

Dice: Actividad: Resuelve las siguientes sumas de números fraccionarios con signo ​

Answer 1

Explicación paso a paso:

1)

$\frac{2}{5} + \frac{8}{10} = \frac{2 \times 10 + 5 \times 8}{5 \times 10} = \frac{60}{50} = \frac{6}{5}$

2)

$\frac{20}{35} + \frac{1}{9} = \frac{20 \times 9 + 35 \times 1}{35 \times 9} = \frac{215}{315} = \frac{43}{63}$

3)

$\frac{6}{8} + \frac{3}{9} = \frac{6 \times 9 + 8 \times 3}{8 \times 9} = \frac{78}{72} = \frac{13}{12}$

4)

$\frac{4}{5} + \frac{2}{5} = \frac{4 \times 5 + 5 \times 2}{5 \times 5} = \frac{30}{25} = \frac{6}{5}$

5)

$\frac{1}{3} + \frac{2}{9} = \frac{1 \times 9 + 3 \times 2}{3 \times 9} = \frac{15}{27} = \frac{5}{9}$

6)

$\frac{7}{15} + \frac{5}{7} = \frac{7 \times 7 + 15 \times 5}{15 \times 7} = \frac{124}{105}$