Solutions by everydaycalculation.com
1st number: 1 12/30, 2nd number: 1 15/30
4230 - 4530 is -110.
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Related: 84/30-45/30 42/30-90/30 42/60-45/30 42/30-45/60 42/90-45/30 42/30-45/90
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