4cd over 2c = ?

Question

2cd over 2c =? when c=5 and d=2

Answer 1

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

Answer 2

Hi Brandi,

 

c over d means c/d it is another way of saying "divided by"

 

Here,

 4cd over 2c is actually  4cd/ 2c

 

this can be simplified as 2d (since 2c will be cancelled from both denominator and numerator)

 

SO the value of 4cd/2c = 2d =2*2 = 4

 

 

Value of 2cd over 2c = 2cd/ 2c = d =2

 

 

Hope this helps.