You buy two ads in a newspaper. one ad takes up
5
8

58
of a page, and the other ad takes up
1
8

18
of a page. how much space did you buy for ads?

Idk I’m just bored but if I had to guess I would say 22

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: