Solutions by everydaycalculation.com
2130 - 230 is 1930.
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Related: 42/30-2/30 21/30-4/30 21/60-2/30 21/30-2/60 63/30-2/30 21/30-6/30 21/90-2/30 21/30-2/90 21/30-10/30 21/30-14/30
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