Question

59. Calcule:

a ) 2/3 + 1/5: b ) 5/9 + 5/18: c ) 8/7 + 5/3: d ) 5/4 + 10/9:

e ) 23/16 - 5/6: f ) 7/12 + 14/5:

Answer 1

Vamos lá

a ) 2/3 + 1/5 =  o mmc de 3 e 5 = 15

     10/15 + 3/15 =

            13/15

b ) 5/9 + 5/18: o mmc de 9 e 18 = 18

     10/18 + 5/18

             15/18

 c ) 8/7 + 5/3: o mmc de 7 e 3 = 21

       24/21 + 35/21

              59/21

d ) 5/4 + 10/9:  o mmc de 4 e 9 = 36

    45/36 + 40/36 

           85/36

 e ) 23/16 - 5/6: o mmc de 16 e 6 = 48

        69/48 + 40/48

            109/48

f ) 7/12 + 14/5: o mmc de 12 e 5 = 60

    35/60 + 168/60

           203/60

Espero ter contribuído