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13 January, 02:48

3x+3y=10 - 9x-9y=-30

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  1. 13 January, 02:54
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    There is no solution for this answer

    solve problems by elimination

    eqn1) 3x+3y=10

    eqn2) - 9x-9y=-30

    1st multiply eqn 1 by 3

    = 9x+9y=30

    now add the 2 equations

    eqn1) 9x+9y=30

    eqn2) - 9x-9y=-30

    x term: eqn1+eqn2 = (9x-9x) = 0x

    y term: eqn1+eqn2 = (9y-9y) = 0y

    coefficient term: 30-30=0

    new eqn = 0x + 0y = 0
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