solve the equation 2x+y=9 for y

Answer 1

subtract 2x from each side.

Answer 2

i don't understand can you be specific please

Answer 3

for 2x+y=9 you do
-2 -2 (subtract two from both sides)
then you would get:
y=9-2x
(remember that when you move something to the other side you do the opposite equation)(in this case the opposite of positive is negative, so the 2x becomes negative)

Answer 4

sorry subtract 2x from both sides
my mistake