Question

I need the full breakdown

Answer 1

Explanation:

The triangles are similar. Writing a proportion:

(3x − 5 + 10) / 28 = (3x − 5) / 20

Cross multiply:

20 (3x − 5 + 10) = 28 (3x − 5)

Simplify and solve:

20 (3x + 5) = 28 (3x − 5)

5 (3x + 5) = 7 (3x − 5)

15x + 25 = 21x − 35

60 = 6x

x = 10