(39+Х)-27=22

44-(22+Х)=22

78-16-Х=41

1) (39+Х)-27=22

39 + x = 22 + 27;

x = 49 - 39;

x = 10;

2) 44-(22+Х)=22

22 + x = 44 - 22;

x = 22 - 22;

x = 0;

3) 78-16-Х=41

x = 78 - 16 - 41;

x = 21;