pomużcie
rozwiąż :
2/5 +0,77=
15,4+3 1/3=
1,75- 5/6=
3 1/5-2,25=
8 3/4+1,125=
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b) 15,4+3 1/3= 15 4/10 + 3 1/3 = 15 2/5 + 3 1/3 = (77*3 + 5*9) / (3*5) = 276/15 = 18 2/5
c) = 1 3/4 - 5/6 = -7/12
d) = 3.2 - 2.25 = 0.95
e) = 8.75 + 1,125 = 9.875