Yooo someone pls help lol urgent !!

idk seems kinda complicated

Step-by-step explanation:

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:

1) 2/5

2) zero=0/1

3) zero=0/2

4) -4/5

5) undefined=3/0