Question

Point B is between point A & C. Use the following information to find the value of x. 1) AB = 3x2) BC = x+33) AC=21

Answer 1

1) AB = 3x

2) BC = x+3​

Since point B is between points A and C It means that the sum of is both segments is equal to AC:

AB+BC = AC

So:

3x +(x+3)=21

Solving for x:

3x+x+3=21

4x+3=21

4x=21-3

4x= 18

x=18/4

x= 4.5