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16 February, 10:37

Solve the pair of simultaneous equation 4x+6y=21 and 7x-3y=3

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  1. 16 February, 11:01
    0
    X=1.5, y=2.5

    Step-by-step explanation:

    By elimination method

    U have to make either x or y values equal and then eliminate it

    The y values have a common value 12

    By multiplying 6*2 and 3*4

    2 (4x+6y) = (21) 2

    4 (7x-3y) = (3) 4

    8x+12y=42

    +

    28x-12y=12

    36x=54

    X=54/36=1.5

    Substitute x with 1.5

    Y=2.5
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