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solve the sum by elimination method 2x-5y=-8 equation 1. x-4y=-7 equation 2​

By Lyla

solve the sum by elimination method 2x-5y=-8 equation 1. x-4y=-7 equation 2​

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Lyla

(3) if the first term of a G.P is 5 and
common ratio is -5 then which term
is 3125 ?
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1. In which quadrant or on which axis do each of the points (-2, 4), (3, – 1), (-1,0),
(1, 2) and (-3,- 5) lie? Verify your a

1 thought on “solve the sum by elimination method 2x-5y=-8 equation 1. x-4y=-7 equation 2​”

  1. Answer:

    2x-5y = -8 equation (1)

    multiply equation (2) by 2 and then subtract equation (1) from (2)

    step 2: 2x-8y = -14

    2x-5y= -8

    -3y= -6

    now divide both sides by -3 we will get

    -3y/-3 = -6/-3

    y = 2

    now put y = 2 in anyone of the above equation we will get

    I am going to put in equation 1

    2x -5(2) = -8

    2x – 10 = -8

    add 10 to both sides

    2x -10+10 = -8+10

    2x +0 = 2

    or 2x= 2

    now divide both sides by 2 we will get

    2x/2= 2/2

    x = 1

    so x=1 and y= 2

    Reply

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