Solutions by everydaycalculation.com
1st number: 16/30, 2nd number: 1 15/30
1630 - 4530 is -2930.
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Related: 32/30-45/30 16/30-90/30 16/60-45/30 16/30-45/60 48/30-45/30 16/90-45/30 16/30-45/90 80/30-45/30
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