Maria, kara, and tommy order 1 pizza to share. maria eats 1/4 of the pizza, kara eats 1/8 of the pizza, and tommy eats 3/8 of the pizza. how much of the pizza is left?

3/4

Step-by-step explanation:

So you give them all a common denominator of 8. This means Maria eats 2/8 of the pizza, Kara eats 1/8 of the pizza, and Tommy eats 3/8 of the pizza. When you add them you get 6/8 which simplified to 3/4.

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:

it is x equals 3   plese mark me really need it

step-by-step explanation: