college math

posted by .

5u+2v=-15
3u+v=-8 Im not sure how to do this problem

  • college math -

    double the 2nd:
    6u + 2v = -16
    5u + 2v = -15
    subtract them:
    u = -1
    sub into 2nd:
    -3 + v = -8
    v = -5

    v = -5 and u = -1

    (curious why you called this "college math", this is grade 7 )

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. College Math

    Not sure how to approach this problem. Prove the comparison principle for the diffusion equation, Ut = K*Uxx. If u and v are solutions, and if u <= v for t = 0, x = 0, and x=l, then u <= v for 0 <= t < infinity, and 0 <= …
  2. College Accounting

    Re: Homework Text: College Accounting, 19th Edition Page 227-229 Can you provide me with the trail blances for May: Comprehensive Problem 2 - The General's Favoriate Fishng Hole. I am really having a problem with this assignment and …
  3. College Math II

    x/x – 1 - 3/x = 1/2 I am not sure how to solve this equation and show my work. My problem just says to solve the equation. Thanks.
  4. College Math II

    x/x – 1 - 3/x = 1/4 My problem says to show the work and to solve the equation. I am not sure how to use the steps to show my work and answer the problem. Thanks.
  5. College Math II

    Solve by any method. x(x + 1) = 12 I am not sure what method to use to show my work and figure out the answer. Can someone help me understand this problem. Thanks.
  6. College Math II

    Solve by any method. a^4 – 5a^2 + 4 = 0 I am having problems figuring out what method to use to solve this problem. I need to show my steps and I am not sure how to do this. Can someone help?
  7. math-college algebra

    y-3=1/2(x-6) "finding the value of a variable" x=2 I know the answer is 1, but how do I work the problem to get 1. This problem is in our text book and in the back it states the answer is 1. I tried working the problem serval times …
  8. Statistics

    What percentage of college students are attending a college in the state where they grew up?
  9. college algebra

    One positive number is one-fifth of another number. The difference between the two numbers is 200, find the numbers. Im not sure how to approach this problem x-1/5 = x+200 ?
  10. English

    1. The hospital is for certain people. 2. He has a certain problem. 3. He has a sure problem. 4. He is certain that the boy is diligent. -------------------------- Are they all grammatical?

More Similar Questions