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12 January, 06:09

Determine whether the systems have one solution, no solution, or infinitely many solutions

3x-2y=3; 6x-4y=1

3x-5y=8; 5x-3y=2

3x 2y=8; 4x 3y=1

3x-6y=3; 2x-4y=2

3x-4y=2; 6x-8y=1

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  1. 12 January, 07:26
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    First system: no solution

    Second system: one solution

    Third system: one solution

    Fourth system: infinite solutions

    Fifth system: no solution

    Step-by-step explanation:

    First system: 3x-2y=3; 6x-4y=1

    From the first equation: y = (3x - 3) / 2

    Using this value of y in the second equation:

    6x - 6x + 6 = 1

    6 = 1 - > System has no solution

    Second system: 3x-5y=8; 5x-3y=2

    From the first equation: x = (8 + 5y) / 3

    Using this value of x in the second equation:

    5 * (8 + 5y) - 9y = 6

    40 + 25y - 9y = 6

    16y = - 34 - > y = - 2.125

    x = (8 - 5*2.125) / 3 = - 0.875

    This system has one solution

    Third system: 3x-2y=8; 4x-3y=1

    From the first equation: x = (8 + 2y) / 3

    Using this value of x in the second equation:

    4 * (8 + 2y) - 9y = 3

    32 + 8y - 9y = 6

    y = 26

    x = (8 + 2*26) / 3 = 20

    This system has one solution

    Fourth system: 3x-6y=3; 2x-4y=2

    From the first equation: x = 1 + 2y

    Using this value of x in the second equation:

    2 * (1 + 2y) - 4y = 2

    2 + 4y - 4y = 2

    2 = 2

    This system has infinite solutions

    Fifth system: 3x-4y=2; 6x-8y=1

    From the first equation: x = (2 + 4y) / 3

    Using this value of x in the second equation:

    2 * (2 + 4y) - 8y = 1

    4 + 8y - 8y = 2

    4 = 2

    This system has no solution
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