The length of a rectangular blackboard is 8cm more than its breadth. If its length is increased by 7 cm and the breadth is decreased by 4cm, its area remains unchanged. Find the length and the breadth of the rectangular blackboard.
The length of a rectangular blackboard is 8cm more than its breadth. If its length is increased by 7 cm and the breadth is decreased by 4cm, its area remains unchanged. Find the length and the breadth of the rectangular blackboard.