Решим примеры по цепочке:
\( 7 - 8 = -1 \)
\( -1 + 1 = 0 \)
\( 0 + 7 = 7 \)
\( 7 - 2 = 5 \)
\( 5 + 5 = 10 \)
\( 10 - 5 = 5 \)
\( 5 + 6 = 11 \)
\( 8 + 2 = 10 \)
\( 10 + 1 = 11 \)
\( 11 + 7 = 18 \)
\( 18 - 3 = 15 \)
\( 15 + 45 = 60 \)
\( 60 + 1 = 61 \)
\( 61 - 5 = 56 \)
\( 0 + 1 = 1 \)
\( 1 + 5 = 6 \)
\( 6 - 4 = 2 \)
\( 2 + 2 = 4 \)
\( 4 + 4 = 8 \)
\( 8 + 1 = 9 \)
\( 9 + 9 = 18 \)
\( 9 - 3 = 6 \)
\( 6 - 7 = -1 \)
\( -1 + 6 = 5 \)
\( 5 - 2 = 3 \)
\( 3 + 3 = 6 \)
\( 6 + 7 = 13 \)
\( 13 + 22 = 35 \)
Теперь можно и отдохнуть!