The sides of a triangle have lengths 2x - 1, x + 5, and 3x - 7, Which of the following describes the perimeter of the triangle in terms of x

the answer is 6x-3

Step-by-step explanation:

your adding 2x-1, x+5, and 3x-7

this is done by combing like terms

this means 2x, x and 3x get added together (remember the x has a 1 in front of it) this gives you 6x

-1,-7, and5 are added together giving you - 3

put that together 6x-3