Solutions by everydaycalculation.com
2130 - 530 is 815.
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Related: 42/30-5/30 21/30-10/30 21/60-5/30 21/30-5/60 63/30-5/30 21/30-15/30 21/90-5/30 21/30-5/90 21/30-25/30 21/30-35/30
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