Question

determinati produsul dintre nr 13/36 Si suma nr.7/26 si 1/13 .determinați produsul dintre nr.6/31 si diferenta numerelor 2 1/5 Si 1 1/6

Answer 1

13/36 x (7/26 + 1/13) = 13/36 x (7/26 + 2/26) = 13/36 x 9/26 = 1/36 x 9/2 = 1/4 x 1/2 = 1/8
6/31 x (2 si1/5 - 1 si 1/6) = 6/31 x (11/5 - 7/6) = 6/31  x (66/30 - 35/30) = 6/31 x 31/30 = 6/1 x 1/30 = 1/1 x 1/5 = 1/5