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2 September, 00:21

The difference of two numbers. (a, b) is 21. The difference of 5 times a and 2 times b is 18. What are the values of a, b?

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  1. 2 September, 00:46
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    The equation is b-a = 21;

    2b-5a = 18

    a=8 and b = 29

    therefore 29-8 = 21

    2 (29) - 5 (8) = 18

    58-40=18
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