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2014-06-08T13:19:43+03:00
1,5=1 intreg 5/10 = 1intreg  1/2=  3/2

2,5= 2 intregi 5/10= 2 intregi 1/2= 5/2

22,(9)=22 intregi 9/9=  22 intregi 1/1= 23

6* (3/2 - 5x/2)=23 -x

6* (3-5x)/2=23-x

3(3-5x)=23-x

9-15x=23-x

-15x+x=23-9

-14x= 14

x= -1
2 5 2