Thực hiện phép tính c) ( 2^ 2 : 4/ 3 − 1 /2 ) ⋅ 6 /5 − 17 ;

c) \(\left( {{2^2}:\frac{4}{3} - \frac{1}{2}} \right) \cdot \frac{6}{5} - 17\)

\( = \left( {4\, \cdot \,\frac{3}{4} - \frac{1}{2}} \right) \cdot \frac{6}{5} - 17\)

\( = \left( {3 - \frac{1}{2}} \right) \cdot \frac{6}{5} - 17\)

\( = \frac{5}{2} \cdot \frac{6}{5} - 17\)\( = 3 - 17 = - 14\).