A bag of marbles contains 4 red marbles, 5 green marbles, and 3
blue marbles. Karen takes a marble out, replaces it
and pulls out another marble,
what is the probability both
marbles are red?

fa tha first one you gonna add y to both sides

it look like this

x-y+y=6+y

x=y+6

therefore your answer is

x =y+6

fa tha second one

you gonna flip tha equation

it gonna look like x-4y=y

then add 4 to both sides

it gonna look like tha

x-4 +4 =y +4

so therefore tha answer is x=y+4

step-by-step explanation:

could

step-by-step explanation:

u send me a picture of ur work