24x-24=180, my calculator said it was 12 and it was right but I don't understand how. My original answer was 8.5

It should be 8.5, idk how its wrong

Step-by-step explanation:

8.5

Step-by-step explanation:

ok so you take and add 24 to the -24 and the 180. The -24 cancels out sout its 204. 24x=204 then divide by 24 and thats your answer 8.5

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:

d

step-by-step explanation: