很高兴为你解答
1:(9 - 4) × 7 - 11
2:((9 - 4) × 7) - 11
3:(7 - 4) × 11 - 9
4:((7 - 4) × 11) - 9
5:(7 × (9 - 4)) - 11
6:7 × (9 - 4) - 11
7:(11 × (7 - 4)) - 9
8:11 × (7 - 4) - 9
想用哪个就用那个,