Question

B is between A and C, BC=38, and AC=42. Find AB
help please!

Answer 1

AB = 4

Explanation:

AB + BC = AC

Substitute the line segments for their given values:

AB + 38 = 42

Subtract both sides by 38:

AB = 42 - 38

AB = 4

Check your work:

4 + 38 = 42

42 = 42

Correct!