Oblicz podaną sumę. Wynik przedstaw w postaci liczby mieszanej : a) 13/16 +7/8= b) 3/4 +2/3= c) 7/15 +13/20= d) 8/21 +7/6= Plis pomóżcie mi Daje naj

a).13/16 + 7/8 = 13/16 + 14/16 = 27/16 = 1 i 11/16 b).3/4 + 2/3 = 9/12 + 8/12 = 17/12 = 1 i 5/12 c).7/15 + 13/20 = 28/60 + 39/60 = 67/60 = 1 i 7/60 d).8/21 + 7/6 = 16/42 + 49/42 = 65/42 = 1 i 23/42

13/16 + 7/8 = 13/16 + 14/16 = 27/16 = 1 i 11/16 3/4 + 2/3 = 9/12 + 8/12 = 17/12 = 1 i 5/12 7/15 + 13/20 = 28/60 + 39/60 = 67/60 = 1 i 7/60 8/21 + 7/6 = 16/42 + 49/42 = 65/42 = 1 i 23/42