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11 March, 14:55

2x+3y=9 - 4x-6y=2 unique solution

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  1. 11 March, 15:14
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    No. They do not have unique solution.

    Step-by-step explanation:

    2x+3y=9 (1)

    -4x-6y=2 (2)

    (1) * 2, and (2) * 1, you have:

    4x+6y=18 (1)

    -4x-6y=2 (2)

    (1) + (2), you have:0=20 (wrong)

    The equations do not have unique solution
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