Question

simplificar frações a) 25/30 + 15/30 b)15/10 - 8/10 c) 25/9 - 15/9

Answer 1

$a) \: \frac{25}{30} + \frac{15}{30} = \frac{40}{30} = 1 \frac{10}{30 }$
$b) \: \: \: \frac{15}{10} - \frac{8}{10} = \frac{15 - 8}{10} = \frac{7}{10}$
$c) \: \: \frac{25}{9} - \frac{15}{9} = \frac{25 - 15}{9} = \frac{10}{9} = 1 \frac{1}{10}$