Solutions by everydaycalculation.com
1030 - 310 is 130.
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Related: 20/30-3/10 10/30-6/10 10/60-3/10 10/30-3/20 10/30-9/10 10/90-3/10 10/30-3/30 50/30-3/10 10/30-15/10 10/30-3/50 70/30-3/10 10/30-21/10 10/30-3/70
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