Respuesta :

choixongdong

The two triangles are similar

3x / 20 = (4x + 2) / (20 + 8)

3x / 20 = (4x + 2) / 28

28 * 3x = 20 * (4x + 2)

84x = 80x + 40

4x = 40

x = 10

answer

x = 10

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