Question

The perimeter of a triangle is 42 yards. The first side is 5 yards less than the second side, and the third side is 2 yards less than the first side. What is the length of each side?

Answer 1

13 yds

18 yds

11 yds

Step-by-step explanation:`

P=S1 + S2 + S3

42 = (S-5) + S + (S-7)

42 = 3S - 12

54 = 3S

18 = S

To check answer add the sides together

(18-5) + 18 + (18-7)

13 + 18 + 11 = 42