need help asap

$\frac{10π}{5}= 2π$ so for >10π we start from 0 again.The same and with -10π

So $-\frac{16π}{5}= -\frac{10π}{5}-\frac{6π}{5}= -2π - \frac{6π}{5} = -\frac{6π}{5}$

Correct answer is $-\frac{16π}{5}$

Hope this helps!