maths

posted by .

solve the following simultaneous equation:

5x+2y=29
x-y=-4

2x-y=-1
3x-y=2

5x+y=16
x-2y=1

5x+2y=16
-3x+4y=-7

3x+2y=19
5x-2y=5

7x-1/3-2(7y+3)/5=10/3

5x+2/4+3y-2/5=16/5

  • maths -

    I'll show you how to do the first oner. You try the others using the same method.

    5x +2y = 29
    x - y = -4

    Double the last equation (both sides)
    2x -2y = -8

    Add the first and third equations.

    7x = 21

    x = 3

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Maths

    solve the following pair of simultaneous equation: (x/a)+(y/b)=1 (x/b)+(y/a)=1 can someone help please?
  2. maths pls help

    1. Solve the following simultaneous equations: log2 xy = 7 log2 (x^2/y) = 5 2. If log y x =a and log z x=b where x is not equal to 1, express the following in terms of a and b: logy (yz) Solve the following simultaneous equations: …
  3. maths

    Solve the following simultaneous equation: 8x+3y=23 6x+5y=9
  4. maths

    solve the following simultaneous linear equation: -5x+6y=44 9x+7y=-8
  5. Maths

    Can you pliz help me solve the following simultaneous equation 3x-y=2 and 3y+9x=4
  6. maths

    helo sir/madam can u help me to solve this problem solve the following simultaneous equation logx Y+logy X=5/2 xy=64
  7. Maths

    Solve the following simultaneous equation by substitution method 5x+y=35 & 3x-2y=14
  8. Maths:simultaneous equation

    Plz help me solve for x and y x^3+y^3=1 x^4+y^4=1 help?
  9. maths

    solve the simultaneous equation 1/y + 1/x =5 .......(i ) 1/x - 1/y =1 ........(i i )
  10. Maths

    To solve the simultaneous equation 1.4x + 3y = -1 2y - 3x = -12

More Similar Questions