Solutions by everydaycalculation.com
1st number: 16/30, 2nd number: 1 6/30
1630 - 3630 is -23.
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Related: 32/30-36/30 16/30-72/30 16/60-36/30 16/30-36/60 48/30-36/30 16/90-36/30 16/30-36/90 80/30-36/30
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