Oblicz. a) 3 1/5 + 1 1/3=      b) 2 2/7 + 4 1/8=    c) 1 2/9 + 5 1/2 =    d) 6 3/11 + 2 1/3  BŁAGAM! NA JUTRO! Z góry dzięki :)

a) 3 1/5 + 1 1/3 = 16/5 + 4/3 = 48/15 +  = 20/15 = 68/15= 4 8/15 b) 2 2/7 + 4 1/8= 16/7 + 33/8 = 128/56 + 231/56 = 359 /56 = 6 17/57 c) 1 2/9 + 5 1/2= 11/9 + 11/2= 22/18 + 99/18= 121/18 =6 13/18 d)6 3/11 + 2 1/3= 69/11 + 7/3 = 207/33 + 77/33=284/33= 8 20/33