Ответ:

  1. \((x+38)-59=26\)

    \(x+38=26+59=85\)

    \(x=85-38=47\)

  2. \((f-35)+26=47\)

    \(f-35=47-26=21\)

    \(f=21+35=56\)

  3. \((k-96)-48=21\)

    \(k-96=21+48=69\)

    \(k=69+96=165\)

  4. \(879-(458+h)=231\)

    \(458+h=879-231=648\)

    \(h=648-458=190\)

  5. \(951-(r-354)=882\)

    \(r-354=951-882=69\)

    \(r=69+354=423\)

  6. \(549-(425-b)=488\)

    \(425-b=549-488=61\)

    \(b=425-61=364\)

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