Jaydell wants to buy a jacket priced $150. The jacket is discounted 20% for a sale. How much will Jaydell save if he buys the jacket? and What will be the final cost of the jacket?

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: