Đáp án:
a) 0
Giải thích các bước giải:
\(\begin{array}{l}
a)\dfrac{3}{7} + \dfrac{1}{2} - \dfrac{{17}}{7} + \dfrac{3}{2}\\
= \left( {\dfrac{3}{7} - \dfrac{{17}}{7}} \right) + \left( {\dfrac{1}{2} + \dfrac{3}{2}} \right)\\
= - \dfrac{{14}}{7} + \dfrac{4}{2} = - 2 + 2 = 0\\
b)\dfrac{1}{7} + \dfrac{6}{7}.\left( {\dfrac{1}{2} - \dfrac{1}{3}} \right)\\
= \dfrac{1}{7} + \dfrac{6}{7}.\dfrac{1}{6} = \dfrac{1}{7} + \dfrac{1}{7} = \dfrac{2}{7}\\
c)\dfrac{4}{5}.\dfrac{{58}}{3} - \dfrac{4}{5}.\dfrac{{58}}{3} = 0\\
d)8 + \left( {\dfrac{3}{4} - \dfrac{1}{4}} \right):\left( {\dfrac{9}{4} - \dfrac{{11}}{6}} \right)\\
= 8 + \dfrac{1}{2}:\dfrac{5}{{12}}\\
= 8 + \dfrac{6}{5} = \dfrac{{46}}{5}
\end{array}\)
