By showing all steps, solve for x if the perimeter of a triangle is 26. Side A: 14-2x
Side B:3x-1
Side C: 2x+1
(I'll medal and fan)

Question

By showing all steps, solve for x if the perimeter of a triangle is 26. Side A: 14-2x 
Side B:3x-1 
Side C: 2x+1
(I'll medal and fan)

campbell_st · Answer

well you know 

Perimeter = sum of the 3 sides

so 

26 = 14 - 2x + 3x -1 + 2x + 1

collecting like terms and you get

26 = 3x + 14

all you need to do now is solve for x

hope it helps

anonymous · Answer

I'm lost, how did you get 26=3x+14?

campbell_st · Answer

well I collected the like terms when I added the 3 sides

so looking at the x's 

-2x + 3x + 2x = (-2 + 3 + 2)x
                       = 3x

now the whole numbers

14 - 1 + 1 = 14

so the sum of the 3 sides of the perimeter is 

          3x + 14

and you are told it equals 26

so thats how you get the equation 

26 = 3x + 14

anonymous · Answer

That helped me so much, thank you!