Solutions by everydaycalculation.com
1st number: 16/30, 2nd number: 1 12/30
1630 - 4230 is -1315.
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Related: 32/30-42/30 16/30-84/30 16/60-42/30 16/30-42/60 48/30-42/30 16/90-42/30 16/30-42/90 80/30-42/30
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