the lenght of rectangle exceeds its breadth are each increased by 3 and the area of the new rectangle is will be 84 cm2 more than that of the give rectangle . find lenght & breadth.

(L+3)(w+3) = 84 + L w

L w + 3 L + 3 w + 9 = 84 + L w

3 L + 3 w = 75

need another piece of information to solve
Suspect you were given how much longer it was than wide