Brent divided #3 1/5# by a number and got #4 1/2#. What number did he divide by?
1 Answer
Mar 29, 2016
The number divided by was
Explanation:
Let the unknown number be
Then
Write as
Suppose we had the common denominator of 10 then we would have:
Get rid of the 10: multiply through out by 10 giving: