58+(х+16)=111 49+(х+16)=102

Откроем скобки и найдем сумму.

58 + (х + 16) = 111;

58 + х + 16 = 111;

74 + х = 111;

х = 111- 74;

х = 37;

58 + (37 + 16) = 111;

58 + 53 = 111;

111 = 111.

49 + (х + 16) = 102;

49 + х + 16 = 102;

х + 65 = 102;

х = 102 - 65;

х = 37;

49 + (37 + 16) = 102;

49 + 53 = 102;

102 = 102.