Question

B is between A and C. If AB = 2x + 1, BC = x, and AC = 22. Find AB.

Answer 1

15

Explanation:

AB + BC = AC

2x + 1 + x = 22

3x + 1 = 22

3x = 22 -1

3x = 21

x = 21/3

x = 7

AB = 2*7 +1

= 14 + 1

= 15