Question

(108/111-n)-6/111=50/111

48/53+(a+12/53)=10/53

Answer 1

$frac{108}{111} - n = frac{50}{111} + frac{6}{111} = frac{56}{111} \ n = frac{108}{111} - frac{56}{111} = frac{52}{111}$
$a + frac{12}{53} = frac{10}{53} - frac{48}{53} = - frac{38}{53}$
$a = - frac{38}{53} - frac{12}{53} = - frac{50}{53}$