Ответ:

  1. \(x+38=26+59=85\), \(x=85-38=47\).
  2. \(y-35=47-26=21\), \(y=21+35=56\).
  3. \(k-96=21+48=69\), \(k=69+96=165\).
  4. \(458+h=879-231=648\), \(h=648-458=190\).
  5. \(r-354=951-882=69\), \(r=69+354=423\).
  6. \(425-b=549-488=61\), \(b=425-61=364\).

Ответ: 1) x = 47; 2) y = 56; 3) k = 165; 4) h = 190; 5) r = 423; 6) b = 364.