Solutions by everydaycalculation.com
345 - 745 is -445.
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Related: 6/45-7/45 3/45-14/45 3/90-7/45 3/45-7/90 9/45-7/45 3/45-21/45 15/45-7/45 3/45-35/45 21/45-7/45 3/45-49/45
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