Solutions by everydaycalculation.com
2130 - 1630 is 16.
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Related: 42/30-16/30 21/30-32/30 21/60-16/30 21/30-16/60 63/30-16/30 21/30-48/30 21/90-16/30 21/30-16/90 21/30-80/30
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