the three side lengths of a triangle are represented by x, (x+10), and (2x+5) units. the perimeter of the triangle is 105 units. which of the following is the value of x?
So the perimeter of a triangle consists of the length of the three sides. Therefore 105 = x + (x+10) + (2x+5). You just have to solve the equation now. 105 = 4x+15 90 = 4x 22.5 = x
