২০.4x+3y =13, 3x+2y =11 (x,y) কত হবে? (ক) (6, 2) (গ) (-2, 3) ​

Question

২০.4x+3y =13, 3x+2y =11
(x,y) কত হবে?
(ক) (6, 2)
(গ) (-2, 3)
​

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Everleigh 7 months 2021-10-13T17:55:20+00:00 1 Answer 0 views 0

Answers ( )

  1. Everleigh
    0
    2021-10-13T17:57:06+00:00
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    Answer:

    4x+3y=13

    3x+2y=11

    now

    12x+9y=39

    12x+8y=44

    subtraction..

    0+y= -5

    then

    y= -5

    putting the value of y ..in equ.

    4x+3(-5)=13

    4x-15=13

    4x=28

    x=7..

    y= -5

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