Solutions by everydaycalculation.com
1030 - 1230 is -115.
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Related: 20/30-12/30 10/30-24/30 10/60-12/30 10/30-12/60 10/30-36/30 10/90-12/30 10/30-12/90 50/30-12/30 10/30-60/30 70/30-12/30 10/30-84/30
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