Ответ:

\( 9 - (5 + 3) = 1 \)

\( 9 - 5 + 3 = 7 \)

\( 8 - 4 - (3 + 1) = 0 \)

\( 8 - 4 - 3 + 1 = 2 \)

\( 8 - (4 - 3) + 1 = 6 \)

\( 8 - 4 + 3 - 1 = 8 \)