Solutions by everydaycalculation.com
1st number: 6/30, 2nd number: 2 4/30
630 - 6430 is -2915.
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Related: 12/30-64/30 6/60-64/30 6/30-64/60 18/30-64/30 6/90-64/30 6/30-64/90 42/30-64/30
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