posted by .

1/2x - 1/4y= 7/2
3/4x + 1/3y= 19/2

To change into y=, do i multiply the top one by by 1/4 and the bottom one by -1/3?

  • MATH! -

    You would multiply the top one by -4 and the bottom one by +3, if you want to keep y positive.

  • MATH! -

    What do you have to multiply 1/4 by to get to 1?


    1/2 x - 1/4 y = 7/2
    Multiply across by 4:
    2x - y = 14
    y = 2x -14

    Now multiply the second one across by 3 to finish it yourself.

  • MATH! -

    thank yall(:

  • MATH! -

    Well i can't seem to figure out the intersection on my calc. please help.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. math, Jay

    How do these fractions turn into the following fractions. 1/3=10/30 1/5=6/30 1/10=3/30 There is a fundamental fact of math that says if you multiply anything by one , nothing changes. but 1 = 3/3 = 10/10 etc. So if you have a fraction, …
  2. math,algebra

    Directions:Multiply (-1/2)(-3/8) mY ANSWER : .1875 Now how do i turn this into a fraction. numerator multiplied: 3 denominator multiplied 16 3/16 How do you get to that answer because not every single one would be multiplied by the …
  3. Luke, Math , algebra

    Sorry it was a type. For the problem multiply and write answer in simplest form. 4/12 multiplied by 10/4 My answer: FOr what i understood i only got to the flipping step which is 4/12 multiplied by 4/10 now what step do i do. you mulitply …
  4. drbob222, math ,algebra

    can you explain to me the following problem , ms.sue and others are trying to help me but they are making me more confuse. Is there any short cuts to the following problem. Directions:multiply and write the answer in simplest form. …
  5. Proportional Lengths--Desperate for help!!!

    The lengths in the figure are proportional. In the first figure- 3 on top, and 2 on the bottom In the second figure- 4 1/2 on top, and x on the bottom These are the choices that are written on my assignment. One is the correct answer. …
  6. MATH

    HOW DO YOU MULTIPLY FRACTIONS? what is quik and easy way to mutply fractions Multiply the numerators (top numbers) and multiply the denominators (bottom numbers). Place the multiplication of the top numbers on the top of a new fraction
  7. aritmetics

    how do you figure two thirds of 36 is 24?
  8. Algebra

    O.k. this is similar to the other one I posted. There is a technique in my book how to solve similar ones but the examples aren't so good, so I have no clue were to even start. 1-(1/x)-(12/x^2) ----------------divide top by bottom …
  9. math

    1/2x - 1/4y= 7/2 3/4x + 1/3y= 19/2 To change into y=, do i multiply the top one by by 1/4 and the bottom one by -1/3?
  10. Algebra

    So I'm working on this diamond thing and it looks like this right now -8 (Blank) (Blank) 7 And I usually I multiply to get the top number and add to get the bottom one, but since the top and bottom are filled how do I get the left …

More Similar Questions