Tính hợp lí (nếu có thể): a) 11 /24 − 5/ 41 + 13 /24 + 0 , 5 − 36/ 41 ;

a) \(\frac{{11}}{{24}} - \frac{5}{{41}} + \frac{{13}}{{24}} + 0,5 - \frac{{36}}{{41}}\)

\( = \left( {\frac{{11}}{{24}} + \frac{{13}}{{24}}} \right) + \left( { - \frac{5}{{41}} - \frac{{36}}{{41}}} \right) + 0,5\)

\( = 1 + \left( { - 1} \right) + 0,5\)\( = 0,5\).