Math

Working with simple addition and multiplication of positive and negative numbers. Have completed 59 of 60 problems on a worksheet, I am stumped by one of them. For example Two numbers are given 30 and 13, You must find two number multiplied together equal -30 and when added equal 13, simple enough two numbers are 15 and -2. Cant solve this on. Two numbers added must equal 1, but if multiplied equal -30, Help please.

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  1. hint:
    what is +6 times -5
    what is +6 plus -5

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