For this case we must find the value of the following expression:
[tex]- \frac {2} {5} + \frac {1} {2} =[/tex]
So, we have:
[tex]\frac {(- 2) (2) + (5) (1)} {(5) (2)} =\\\frac {-4 + 5} {10} =[/tex]
Different signs are subtracted and the sign of the major is placed.
[tex]\frac {1} {10}[/tex]
Answer:
[tex]\frac {1} {10}[/tex]
