B is the midpoint of segment AC. AB = 5x and BC = 3x + 4. Find AB, BC and AC.

Answer 1

5x = 3x +4
-3x -3x
2x= 4
/2 /2
x =2
so Ab is 5 *2 which is 10 and BC is 10 and ac is 20

Answer 2

if b is the midpoint of AC,AC =CD, AB =3x+4,AC= 11x -17, and CE= 49, find DE.