Question

The perimeter of an isosceles triangle is 7 meters. The length of one of the congruent sides of the triangle is one meter less than the side that is not congruent. Find the length of the sides of the triangle

Answer 1

2 c + n = 7

c + 1 = n ... c - n = -1

adding equations to eliminate n ... 3 c = 6

solve for c , then substitute back to find n