Solutions by everydaycalculation.com
2130 - 330 is 35.
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Related: 42/30-3/30 21/30-6/30 21/60-3/30 21/30-3/60 63/30-3/30 21/30-9/30 21/90-3/30 21/30-3/90 21/30-15/30 21/30-21/30
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