5x+2y=7 and 4x-3y=24 by substitution method​

Question

5x+2y=7 and 4x-3y=24 by substitution method​

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Abigail 2 months 2021-08-12T15:55:13+00:00 1 Answer 0 views 0

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    2021-08-12T15:57:03+00:00

    Answer:

    {(x,y) =(3,-4)}

    Step-by-step explanation:

    2y=7-5x

    y=7-5x/2……………….(substitute)

    put substitute in another equation

    4x-3y=24

    4x-3(7-5x/2)=24

    (8x-21+15x)/2=24

    8x-21+15x=24×2

    8x-21+15x=48

    8x+15x=48+21

    23x=69

    x=69/23

    x=3

    put value of x in substitute

    y=7-5x/2

    =7-5(3)/2

    =7-15/2

    =-8/2

    = -4

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