Question

Perimeter of a rectangle is 42 cm.Find the dimensions of length is 5cm longer then 3 times of width

Answer 1

2(a+b) it is equal to 42
a is equal to 3b+5
(a+b) is equal to 21
b+3b+5=21
4b+5=21
b is equal to 4 and a is equal to 17

Answer 2

2(a+b) it is equal to 42
a is equal to 3b+5
(a+b) is equal to 21
b+3b+5=21
4b+5=21
b is equal to 4 and a is equal to 17