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