31,28-(m+4,2)=15,093
31,28-м-4,2=15,093 27,08-м=15,093 27,08-15,093=м М=11,987
31,28-(m+4,2)=15,093 31,28-m-4,2=15,093 27,08- m=15,093 -m=15,093-27,08 -m=-11,987 m=11,987