13. Estimate the unknown value

Estimate the value of \(y\) if the interior angle of the hexagon are \(A = (2y + \)13\()°\), \(B = (y - 3)°\), \(C = (y - 4)°\), \(D = (2y - 3)°\), \(E = y°\) and \(F = (2y - 3)°\).

 

 

1. The value of \(y\) is $i$.

 

2. The exterior angle of \(B\) is $i$\(°\).