Question

Please help me with the question below

Answer 1

x = 3

Explanation:

Triangles ABC and DBE are similar.

That makes the ratios of corresponding side lengths equal.

AC/DE = BC/BE

AC/DE = (BE + EC)/BE

12/4 = (x + 6)/x

3 = (x + 6)/x

3x = x + 6

2x = 6

x = 3