Question

The second side of a triangle is 7 inches more than the first side. The third side is 4 inches less than 3 times the first. The perimeter is 28 inches. Find the length of the three sides of the triangle.

Answer 1

Answer:

First side; 5 in

second side: 12 in

third side: 11 in

Step-by-step explanation:

A: first side     B: second side     C: third side

b = a + 7

c = 3a -4

a + b + c = 28

a + (a + 7) + (3a -4) =28

5a + 3 =  28

5a = 28 -3 = 25

a = 5

b = 12

c = 11