Solutions by everydaycalculation.com
1st number: 21/30, 2nd number: 1 24/30
2130 - 5430 is -1110.
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Related: 42/30-54/30 21/60-54/30 21/30-54/60 63/30-54/30 21/90-54/30 21/30-54/90
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