Hello!
The answer are:
- [tex]\frac{-8}{15}[/tex]
- [tex]-1[/tex]
- [tex]-2[/tex]
- [tex]\frac{-3}{10}[/tex]
Why?
Fraction multiplications are lineal, it means that when we want to multiply a fraction by other fraction, we should multiply numerators by numerators and denominators by denominators.
Calculations:
[tex]\frac{2}{3}*\frac{-4}{5}=\frac{-8}{15}\\\\\frac{-5}{7}*\frac{7}{5}=\frac{-35}{35}=-1\\\\ \frac{-2}{39}*39=\frac{-78}{39}=-2\\\\\frac{2}{5}*\frac{-3}{4}=\frac{-6}{20}=\frac{-3}{10}[/tex]
Have a nice day!
