11 15/26 + [-17 5/13] =
[tex]11 \frac{15}{26} = \frac{301}{26}[/tex]
[tex]-17 \frac{5}{13} = -\frac{226}{13}[/tex]
[tex]\frac{301}{26} - \frac{226}{13}[/tex]
To subtract two fractions the denominators should be same
Least common denominator = 26
We multiply second fraction by 2
[tex]\frac{301}{26} - \frac{452}{26}[/tex]
[tex]\frac{301-452}{26}[/tex]
[tex]\frac{-151}{26}[/tex]