posted by Samantha

How do I solve this For (-x)?
(Do I just make -x equal 1 or 2?) I’m suppose to solve the equation by elimination. (Can someone give me steps to solving it and I’ll try to do it and you guys check my work?)

  1. Scott

    multiply the 1st equation by -2, then add the result to the 2nd equation
    ... this will eliminate y

    solve the subsequent equation for x

  2. Samantha

    I tried doing that but I think I went wrong somewhere because I did




    And got -x-0y=-3

    ...I know this is wrong, can someone help me

  3. Scott

    you lost the minus sign on the 14

    you did this ... -2•9=-18
    ... the 9 was negative
    ... to give a positive 18 for cancelling with the -18 in the 2nd equation

    should end up ... -15x = -45

Respond to this Question

First Name

Your Answer

Similar Questions

  1. Pre-algebra

    Solve. 29x – 2(9x – 0.455) = 10x + 0.525 Give us you thinking on this so we can help you solve the equation. What is it you don't understand about solving this eqution?
  2. algebra2

    solve the systems of equation: First : 4x-2y = 2 Second: y = -4x-7 Should i solve by using substitution, elimination or multiply then use elimination?
  3. Algebra

    To solve the system of equations, which expression could be substituted for x into the first equation?
  4. algebra

    I just need a quick check before I hand in my work if you would...Thanks. 1. I am to use the intercepts to graph the equation x+3y=6 I used the formula y=mx+b using 3 and -6 for x I got these as my ordered pairs to graph (3, 1), (-6, …
  5. Math : Algebra

    I have a whole page of questions I'm trying to complete that are similar to this, but no idea how to do them. If someone could give me a walk through of this question I'd be very appreciative. I'm just suppose to solve the equation. …
  6. Algebra

    How do I solve a quadratic equation x^2 - x = 30 by completing the square- I don't understand-could someone just explain the steps to solving this

    Please help Im am Grade 5 and my teacher is letting me do this. 1. Solve the solution by using elimination and substitution 3/x - 2/y = 14 6/x + 3/y = 7 2. Solve by eliminating x (this is solving 3 linear equations) then substitute …
  8. Algebra

    5. Solve for x in the following system. 6x + 6y = -2 y = x I can't seem to figure this out, can someone give me some steps into solving this?
  9. Solving One-Step Inequalities

    Solve each inequality. 1/5 is less than or equal to x/15 70-a is greater than or equal to 25 I am really confuse about this and I Don't want cheating, I just want steps because I am not really getting this at all. Thanks! Also, this …
  10. Chemistry

    (I corrected it ) 1. Sodium and water react according to the following equation. If 31.5g of sodium are added to excess water, how many liters of hydrogen gas are formed at STP?

More Similar Questions