Question

1) 29 49/53-8 49/53=
2) (20 16/25+13 9/25)- (23 4/14+7 13/14)

Answer 1

$displaystyle boxed{1.} 29 frac{49}{53}-8 frac{49}{53}=(29-8)+( frac{49}{53}- frac{49}{53})=29-8+0=21$

$displaystyle boxed{2.} (20 frac{16}{25}+13 frac{9}{25})-(23 frac{4}{14}+ 7 frac{3}{14})=33 frac{25}{25} - 30 frac{17}{14}=$
$displaystyle = 34-31 frac{3}{14}= 33 frac{14}{14}-31 frac{3}{14}=2 frac{11}{14}$