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algebra

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Solve by the elimination method

0.3x-0.2y=4
0.4x+0.5y= - 55/17


Thank you

  • algebra -

    multiply the first equation by 5, the second equation by2

    1.5x-y=20
    .8x+y=-110/17

    add the equations

    2.3x=20-110/17
    multipy both sides by 17
    39.1x=340-110
    x= 230/39.1

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