Solutions by everydaycalculation.com
1st number: 10/15, 2nd number: 1 7/9
1015 - 169 is -109.
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Related: 20/15-16/9 10/15-32/9 10/30-16/9 10/15-16/18 30/15-16/9 10/15-48/9 10/45-16/9 10/15-16/27 50/15-16/9 10/15-80/9 10/75-16/9 10/15-16/45 70/15-16/9 10/15-16/63
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