let the shortest side be x
middle side = x/2 + 9
longest side = 4x
x + x/2+9 + 4x = 31
solve for x, I suggest multiplying each term by 2 to clear the fraction
The medium side of a triangle is 9 more than 1/2 the shortest side,and the longest side is 4 times the shortest side. If the perimeter is 31 in. Find the lengths of the sides of the triangle
1 answer