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24 September, 14:41

The solution of the system 4x+5y=2 and 6x-2y=b is (3, a). Find the values of a and b.

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  1. 24 September, 16:57
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    Plug x=3 in the first equation to find y:

    4 (3) + 5y=2

    y=-2

    so a=-2

    Next, plug x=3, y=-2 in the second equation to find b:

    6 (3) - 2 (-2) = 22

    b=22
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