Are 2 triangles below similar? if yes what is the scale factor that compares DBC to JHI

it's equivalent, so we can say that its equal.

let's call the denominator x and the numerador is 18 less then denominator, x - 18.

multiply

2.x = 5.(x - 18)

2x = 5x - 90

90 = 5x - 2x

90 = 3x

x = 90/3

x = 30

so:

you can't solve x because it is 2 linear equation and you only have one equation

the answer is 1/4

step-by-step explanation: