Page 2 - MM 7
P. 2

14
                        9
               =  / 21 +  / 21

               =  (14 + 9) / 21
                 23
               =  / 21
               2-  1     3
                   / 6 +  / 8

               Solution:

               The LCM (least common multiple) of the denominators 6 and 8 is 24.













               So, we convert the given fractions into equivalent fractions with denominator 24.

               We have,


                                   4
                 1
               =  / 6 =  (1 × 4) / (6 × 4)=  / 24 [since 24 ÷ 6 = 4]

                     3
                                       9
               and,  / 8 =  (3 × 3) / (8 × 3) =  / 24 [since 24 ÷ 8 = 3]

                                4
                                       9
                      1
                           3
               Thus,  / 6 +  / 8 =  / 24 +  / 24

               =  (4 + 9) / 24

                 13
               =  / 24

               3. Find the difference of ¹⁷/₂₄ and ¹⁵/₁₆.

               Solution:

               The LCM (least common multiple) of the denominators 24 and 16 is 48.
   1   2   3   4   5