Thank you for helping

12 students

Step-by-step explanation:

Ok, so we know that when he asked 5 friends to come 3 of them came.

So let's put that into a probability:

3/5 or .60 if you prefer.

Now, all you have to do is multiply .60 by the possible 20 students:

This gives us 12 students.

Hope this helps :)

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:

this is false ^.^ lol