Question

It's looking for the solved answer, not the simplified expression (no variable in final answer)

Answer 1

BC = 144 units

Explanation:

BC = BD + DC , substitute values

8x = 4x + 10 + 3x + 8 = 7x + 18 ( subtract 7x from both sides )

x = 18

Thus

BC = 8x = 8 × 18 = 144 units