There are 453.592 grams in one pound . a semi-slick , kevlar tire weighs about 520 grams . what is the tire’s weight in pounds ?

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:

i think asking google will you get the answer to that question