Answer:
x = 6
AB = 16
BC = 11
Step-by-step explanation:
AB + BC = AC
2x+4 + x+5 = 27
3x +9 = 27
Subtract 9 from each side
3x =18
Divide by 3
AB = 2x+4 = 2*6 +4 = 12+4 = 16
BC = x+5 = 6+5 = 11
