Solutions by everydaycalculation.com
1st number: 24/30, 2nd number: 1 2/30
2430 - 3230 is -415.
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Related: 48/30-32/30 24/30-64/30 24/60-32/30 24/30-32/60 72/30-32/30 24/30-96/30 24/90-32/30 24/30-32/90
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