Đáp án:
f) 12
Giải thích các bước giải:
\(\begin{array}{l}
a)\dfrac{{75}}{{100}}.\left( { - \dfrac{{12}}{5}} \right) - \dfrac{{25}}{6}.1\\
= \dfrac{9}{5} - \dfrac{{25}}{6} = - \dfrac{{71}}{{30}}\\
b)\dfrac{{11}}{{25}}.\left( { - \dfrac{{124}}{5}} \right) - \dfrac{{11}}{{25}}.\dfrac{{376}}{5}\\
= \dfrac{{11}}{{25}}\left( { - \dfrac{{124}}{5} - \dfrac{{376}}{5}} \right)\\
= \dfrac{{11}}{{25}}.\left( { - 100} \right) = - 44\\
c)\left( { - \dfrac{3}{4} + \dfrac{2}{7} - \dfrac{1}{4} + \dfrac{5}{7}} \right):\dfrac{2}{3}\\
= \left( { - 1 + 1} \right):\dfrac{2}{3} = 0\\
d)\dfrac{3}{4} + \dfrac{1}{4}.\left( { - \dfrac{3}{2}} \right).\left( { - 5} \right)\\
= \dfrac{3}{4} + \dfrac{{15}}{8} = \dfrac{{21}}{8}\\
e)12.{\left( { - \dfrac{3}{2}} \right)^2} = 27\\
f)4 + 6 - 3 + 5 = 12
\end{array}\)
