Cross Multiplication In Fractions Is Needed When You Want To Add Or Subtract Unlike Fractions, So Cross Multiplication In Fractions Is When You Multiply A Fractions Numerator And Denominator With The Other Fractions Denominator
Cross Multiplication In Fractions : 5/10 - 10/50 = 5x50=250, 10x10=100, 10x50=500, 50x10=500, 250/500 - 100/500 = 150/500.