Question

giúp mik ạ cần gấp

Answer 1

\(1,\\ a,\Rightarrow\dfrac{1}{5}x=\dfrac{41}{35}\Rightarrow x=\dfrac{41}{7}\\ b,\Rightarrow\dfrac{1}{5}x=\dfrac{1}{3}\Rightarrow x=\dfrac{5}{3}\\ 2,\\ a,=-\dfrac{5}{13}\\ b,=\dfrac{8}{13}\\ c,=-\dfrac{3}{15}+\dfrac{7}{15}=\dfrac{4}{15}\\ d,=\dfrac{23}{7}\cdot\dfrac{5}{46}=\dfrac{5}{14}\\ e,=\dfrac{2}{7}\\ f,=\dfrac{21}{4}-\dfrac{7}{2}=\dfrac{21}{4}-\dfrac{14}{4}=\dfrac{7}{4}\)