Question

for line segment ac, point b is between points a and c. points abc are collinear. if ab=x-7, bc=2x-2, and ac=x+13. solve for bc

Answer 1

BC = 20

Explanation:

Point B is between points A and C and points A, B, C are collinear so

AB + BC = AC

x-7 + 2x-2 = x + 13

3x - 9 = x + 13

+9 +9

3x = x + 22

- x - x

2x = 22

BC = 2x - 2 = 22 - 2 = 20