Problema Solution
each of the two equal sides of an isosceles triangle is 5 cm less than 3 times the length of the third side. find the length of each side if the triangle's perimeter is 81
81 cm
Answer provided by our tutors
81 = x + 2(3x - 5)
81 = x + 6x - 10
81 + 10 = 7x
7x/7 = 91/7
x = 13