Question

resolver a) 1/3 + 2/7 = b) 9/5 + 2/5= c) 3/5 + 1/10: d) 5/7 + 8/7​

Answer 1

Respuesta:

a) 13/21

b) 11/5

c) 7/10

d) 13/7

Explicación paso a paso:

$a) . \frac{1}{3} + \frac{2}{7} = \frac{ 1. 7 + 3. 2 }{ 3. 7} = \frac{7 + 6 }{21} = \frac{13}{21} \\\\b) . \frac{9}{5} + \frac{2}{5} = \frac{9 . 5 + 5. 2 }{ 5.5} = \frac{45 + 10 }{25} = \frac{55}{25}=\frac{11}{5} \\\\ c) . \frac{3}{5} + \frac{1}{10} = \frac{3. 10 + 1. 5 }{ 5.10} = \frac{30 + 5 }{50} = \frac{35}{50}=\frac{7}{10}\\\\d) . \frac{5}{7} + \frac{8}{7} = \frac{5 . 7 + 8. 7 }{ 7.7} = \frac{35 + 56 }{49} = \frac{91}{49}=\frac{13}{7}$