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21 April, 04:21

Eight times a number plus five times another number is - 13. The sum of the number is 1. What are the nymber?

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  1. 21 April, 07:36
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    x=-6 y=7

    Step-by-step explanation:

    8x+5y=-13; x+y=1

    Isolate x and substitute

    (-13-5y) / 8 + y=1

    Isolate y

    y=7

    substitute y=7

    (-13-5*7) / 8=-6
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