Answer:
BC = 9
Explanation:
The Line BE = BC + CD + DE
The Line BE = X + 25.
The Line BC = 9 + X
The Line CD = 5
The Line DE = X + 11
Therefore
BE = BC + CD + DE
BE - CD - DE = BC
(X + 25) - (5) - (X + 11) = 9 + X
X + 25 - 5 - X - 11 = 9 + X
9 = 9 + X
0 = X
So
BC = 9 + X
BC = 9 + 0
BC = 9