Question

the longest side of a triangle is 2 times the shortest side. If the third side is 5 more than the shortest side, and the perimeter is 65cm, find the measures of the three sides of the triangle

Answer 1

what i needed is the way to set up the equation

Answer 2

let the smallest side=x
then largest side =2x
third side= x+5
perimeter P=sum of all sides
x+2x+x+5=65
solve for x and then find the sides.