9 + 10 is what lol haha lol haha lol

Using meme logic it would be 21 but if your being legit the 19 my dude.

rounding to the nearest thousandth would be 452,000

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: