Question

ayuden porfabor lo nesesito​

Answer 1

Explicación paso a paso:

$a + b = \frac{10}{3} + \frac{2}{3} \\ a + b = \frac{12}{3} = 4 \\ a - b = \frac{10}{3} - \frac{2}{3} = \frac{8}{3}$

$a + b = \frac{7}{4} + \frac{3}{5} \\ a + b = \frac{35 + 12}{20} = \frac{47}{20} \\ a - b = \frac{7}{4} - \frac{3}{5} = \frac{35 - 12}{20} \\ a - b = \frac{23}{20}$

$a + b = \frac{10}{3} + \frac{6}{5} \\ a + b = \frac{50 + 18}{15} = \frac{68}{15} \\ a - b = \frac{10}{3} - \frac{6}{5} \\ a - b = \frac{50 - 18}{15} \\ a - b = \frac{32}{15}$