If the two triangles are similar, then by definition we have that the quotient between two sides of a triangle is equal to the quotient between two sides of the second triangle. We have then: ((3x) / (4x + 2)) = ((20) / (28)) Clearing: 3x = (20/28) * (4x + 2) 28 * 3x = (20) * (4x + 2) 84x = 80x + 40 84x-80x = 40 4x = 40 x = (40) / (4) x = 10 answer The value of x is 10
