You have a three-digit number ABA. If you add the digits, you’ll get AC. If you add the digits of this sum, you’ll get A. What is the original number?

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:

5

step-by-step explanation:

answer: (1,3) (3,-1) (5,-5) ?

step-by-step explanation: