Đáp án:
Giải thích các bước giải:
\(\begin{array}{l}\left( {6 - \frac{2}{3} + \frac{1}{2}} \right) - \left( {5 + \frac{5}{3} - \frac{3}{2}} \right) - \left( {3 - \frac{7}{3} + \frac{5}{2}} \right)\\ = 6 - \frac{2}{3} + \frac{1}{2} - 5 - \frac{5}{3} + \frac{3}{2} - 3 + \frac{7}{3} - \frac{5}{2}\\ = \left( {6 - 5 - 3} \right) + \left( {\frac{{ - 2}}{3} - \frac{5}{3} + \frac{7}{3}} \right) + \left( {\frac{1}{2} + \frac{3}{2} - \frac{5}{2}} \right)\\ = - 2 + 0 - \frac{1}{2}\\ = - \frac{5}{2}\end{array}\)
