10th grade algebra

solve the equation 2x+y=9 for y

asked by natalie
  1. subtract 2x from each side.

    posted by bobpursley
  2. i don't understand can you be specific please

    posted by natalie
  3. for 2x+y=9 you do
    -2 -2 (subtract two from both sides)
    then you would get:
    (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)

    posted by Joanne
  4. sorry subtract 2x from both sides
    my mistake

    posted by Joanne

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