Gia has 1/2 of a pizza left over. she wants to share pizza with 3 of her friends. what fraction of the original pizza will gia and her 3 friends each receive?

1/8

Step-by-step explanation:

If you have only one half of a pizza that you want to share amongst 4 people then you divide the half pizza into 4 slices, which you then have to imagine if the other half of the pizza were there then there would be 4 more slices. Making 8 slices in total, so if Gia and her friends each got one slice from the half pizza, then they each would have 1/8 of the entire pizza.  Sorry this is a really bad explanation.

step-by-step explanation:

the ratio of red paint to blue paint is always 9/7. that means that, whatever x's value, (4x+12)/(4x-4) has that same ratio. so, set up an equation and cross-multiply to solve for x:

9/7 = (4x+12)/(4x-4)

9(4x-4) = 7(4x+12)

36x - 36 = 28x + 84

8x - 36 = 84

8x = 120

x = 15