21+\frac{-25}{27}

\frac{25}{8}+\frac{1}{4}

\frac{12}{-35}+\frac{27}{35}

\frac{-4}{21}+\frac{17}{14}

\frac{-5}{-36}+\frac{-7}{-20}

-5\cdot \frac{1}{8}

\frac{1}{3}\cdot \frac{-16}{-11}

\frac{\frac{-10}{13}}{\frac{3}{7}}=

\frac{\frac{16}{7}}{\frac{5}{2}}=

\frac{2}{\frac{-4}{9}}=

\frac{\frac{-10}{-19}}{15}=

\frac {-28}{-20} = \frac {\editable {} }{5}

\frac {80}{60} = \frac {-16}{\editable {} }

\frac {45}{-36} = \frac {\editable {} }{-12}

\frac {10}{14} = \frac {90}{\editable {} }

Simplifica la expresion algebraica

\frac{18 x + 20 y}{4}

Simplifica la expresion algebraica

\frac{14 x + 35 y}{21}

Simplifica la expresion algebraica

19 - 18 \cdot \frac{16 - 5 x}{9}

Simplifica la expresion algebraica

26 - 6 \cdot \frac{4 + 5 x}{6}

Simplifica la expresion algebraica

9 - 7 \cdot \frac{-1 - 10 x}{7}