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Answers by Daniel A.

4cd over 2c = ? (answer)

When we know what a variable equals, namely that c=5 and d=2, we can replace them with those values in the equations.  So: 2cd/2c = 2(5)(2)/2(5) = (2 × 5 × 2) ÷ (2 × 5) = 20 ÷ 10 = 2 Don't forget that saying 2cd over 2c is the same as saying 2cd divided by 2c