9 push-ups in 1 day = 18 push-ups in
days

2 days?

Step-by-step explanation:

there is no question here but I assume you wanted to know how many days in which 18 push ups were done.

18 push ups are done in 2 days

:)

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: