Question

a triangle has sides with lengths of 2x - 7 , 5x - 3, and 2x - 2. what is the perimeter of the triangle

Answer 1

Since the formula for perimeter of a triangle is base+side+side you just combine like terms so 2x+5x+2x=9x and -7+(-3)+(-2)=-12 so you would get 9x-12 for the answer.