Solutions by everydaycalculation.com
1030 - 230 is 415.
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Related: 20/30-2/30 10/30-4/30 10/60-2/30 10/30-2/60 10/30-6/30 10/90-2/30 10/30-2/90 50/30-2/30 10/30-10/30 70/30-2/30 10/30-14/30
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