31); 25,4-(3,6-15,92); -47,3+(-90+26,1) вычислите

-18-(-25-31)=38
-25-31= -56
-18-(-56)=-18+56=38

25,4-(3,6-15,92)=37,72
3,6-15,92= -12,32
25,4-(-12,32)=25,4+12,32=37,72

-47,3+(-90+26,1)= -111,2
-90+26,1= -63,9
-47,3+(-63,9)=-47,3-63,9= -111,2

-18-(-25-31)= -18-(-56)=38
25,4-(3,6-15,92)=25,4-(-12,32)=37,72
-47,3+(-90+26,1) = -47,3-63,9=-111,2