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c) 1,5+2 1/3+3 1/5=15/10+7/3+16/5=45/30+70/30+96/30=211/30=7 1/30
d) 14 7/12-3/4-1 5/6=175/12-3/4-11/6=175/12-9/12-22/12=144/12=12
e) 40-0,8-0,32=38,88
f) 18,2-1 1/4-2 1/5=182/10-5/4-11/5=364/20-25/20-44/20=295/20=14/75
c)1,5+2 1/3+3 1/5=1 3/6+ 2 2/6 + 3 1/5= 3 25/30 + 3 6/30= 6 31/30= 7 1/30
d)14 7/12-3/4-1 5/6 =14 7/12- 9/12- 1 10/12=12
e)40-0,8-0,32=38,88
f)18,2-1 1/4 - 2 1,5=18,2-1,25-2,2=14,75
mam nadzieje że pomogłam i licze na naj :)