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0,6*x=27,9 I :0,6
x= 46,5
2. (1,2 : 3/5 - 1 1/3 * 0,3)=
12/10 * 5/33 - 4/3 *3/6= ( skróć sobie)
4/2-2/3=
12/6-4/6=8/6=1 2/6= 1 1/3
3/4*1 1/3=
3/4*4/3=1
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