How can an inequality with fractions should be solved ?
Let say :
$ \displaystyle \frac{2}{4}\quad?\quad\frac{5}{21} $
Please give me examples, information (step by step).
I should multiply over-cross ' to see if the equation is correct
--------------------------------------------------------- > Solved
Used: a/b = c/d => a*d = b*c
44 = 20 , becouse it not the same on both side, the fraction is wrong.