Question

31,28-(m+4,2)=15,093

Answer 1

31,28-м-4,2=15,093
27,08-м=15,093
27,08-15,093=м
М=11,987

Answer 2

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

Answer 3

31,28-(m+4,2)=15,093