Question

If B is between A and C, AB= x+6, BC= 5x -4, and AC= 12x - 20, then AC=?

Answer 1

AC = 24

Explanation:

First you want to set up the equation to find what x equals which is AB + BC = AC

12x - 20 = x + 6 + 5x - 4

Then combine like terms and solve.

12x - 20 = x + 6 + 5x - 4

12x - 20 = 6x +2

+20 +20

12x = 6x + 22

-6x -6x

6x = 22

x = 11/3 or 3 2/3

Then plug in x to the AC equation.\

12(11/3) - 20

44-20

AC = 24