the longest side of a triangle is six more units than the shortest side. the third side is twice the length of the shortest side. if the perimeter of the triangle is 25 units, write and solve an equantion to find the lengths of all the three sides of the triangle? the equation that i came up is 3 +2n=25 am i right and what is the right equation .
if the short side is x, then
x + 2x + x+6 = 25
how did you get 2n+3 ?