solve the equation 2x+y=9 for y

subtract 2x from each side.

i don't understand can you be specific please

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)

sorry subtract 2x from both sides

my mistake

To solve the equation 2x + y = 9 for y, we need to isolate the y variable on one side of the equation. Here's how:

Step 1: Start with the equation 2x + y = 9.

Step 2: To isolate y, we need to move the 2x term to the other side of the equation. To do that, subtract 2x from both sides:
2x + y - 2x = 9 - 2x.

This simplifies to:
y = 9 - 2x.

Therefore, the solution to the equation 2x + y = 9 for y is y = 9 - 2x.