Solutions by everydaycalculation.com
2030 - 1030 is 13.
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Related: 40/30-10/30 20/30-20/30 20/60-10/30 20/30-10/60 60/30-10/30 20/90-10/30 20/30-10/90 20/30-50/30 20/30-70/30
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