Решение:
- \( x + 147 = 231 \)
\( x = 231 - 147 \)
\( x = 84 \) - \( k - 4523 = 2354 \)
\( k = 2354 + 4523 \)
\( k = 6877 \) - \( (t - 35) + 26 = 47 \)
\( t - 35 + 26 = 47 \)
\( t - 9 = 47 \)
\( t = 47 + 9 \)
\( t = 56 \) - \( (k - 96) - 48 = 21 \)
\( k - 96 - 48 = 21 \)
\( k - 144 = 21 \)
\( k = 21 + 144 \)
\( k = 165 \) - \( 879 - (458 + k) = 231 \)
\( 879 - 458 - k = 231 \)
\( 421 - k = 231 \)
\( k = 421 - 231 \)
\( k = 190 \) - \( 951 - (r - 354) = 882 \)
\( 951 - r + 354 = 882 \)
\( 1305 - r = 882 \)
\( r = 1305 - 882 \)
\( r = 423 \)
Ответ: 1) x = 84; 2) k = 6877; 3) t = 56; 4) k = 165; 5) k = 190; 6) r = 423.