Solutions by everydaycalculation.com
1st number: 16/18, 2nd number: 3 6/18
1618 - 6018 is -229.
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Related: 32/18-60/18 16/36-60/18 16/18-60/36 48/18-60/18 16/54-60/18 16/18-60/54 80/18-60/18 16/90-60/18 16/18-60/90
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