Math

posted by .

3a-2b=12
2a+b=1
multiply eq 2 x 2
4a+2b=2
eliminate b by subtracting eq (1) from (3)
4a+2b=2
3a-2b=12
a=-10 am i going right so far??

  • Math -

    Yes, that looks correct.

    Continue by substituting in a=-10 into one of the equations to find b.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Math

    8*2sq+7*(4+1)= ? Can someone explain to me what to after the parenthesis?
  2. math

    How do I solve the equations using the elimination method: .3x-.2y=4 and .4x +.3y= 49/23 Normally I would multiply the decimals by 10 to make them whole numbers, but that fraction is really throwing me off. What do I multiply to eliminate …
  3. math

    35 divided by [9 plus (9-7) minus 4] plus 10 times 3..can someone please explain how to do this problem math - Evan, Tuesday, May 11, 2010 at 8:37pm think of "Please Excuse My Dear Aunt Sally" P is for paranthesis first E is for exponents …
  4. math

    35 divided by [9 plus (9-7) minus 4] plus 10 times 3..can someone please explain how to do this problem math - Evan, Tuesday, May 11, 2010 at 8:37pm think of "Please Excuse My Dear Aunt Sally" P is for paranthesis first E is for exponents …
  5. Math(Please respond)

    .50 - x / x = 3.20e-1 I need to solve for x. I was going to do .50 X 3.20e-1 and then take the square root but this is not correct. I am not sure what to do. Thank you for your help. Math(Please help) - Reiny, Tuesday, April 17, 2012 …
  6. geometry

    The angle of depression from the top of a lighthouse to a boat in the water is 30°. If the lighthouse is 89 feet tall how far is the boat from the lighthouse to the nearest foot?
  7. Math/fractions

    I need help with subtracting fractions I have no idea if I'm doing it right. Please help. 3/7-9/21 Fist you find a least common denominator, right?
  8. Math

    What can you multiply an expression by to eliminate the imaginary part of the denominator?
  9. maths algebra

    HI STEVE, THANKS for your reply back it was the wrong answer the one you worked, yes a hard question, here is an example of simultaneous questions. x-2/3 + y-1/4 =13/12 (1) 2-x/2 + 3+y/3 =11/6 (2) first step is to get rid of fractions. …
  10. math

    What would you need to multiply by in order to solve this system of equations using the linear combination (elimination) method?

More Similar Questions