Answer:
1
Step-by-step explanation:
[tex]9 - 6 + 3 - 5 = 1[/tex]
Step-by-step explanation:
[tex] \rm \mapsto \: \dfrac{ {3}^{2} - 6 - (8 - 11) + 15}{ - 3} \\ \rm \mapsto \: \frac{9 - 6 - ( - 3) + 15}{ - 3} \\ \rm \mapsto \: \frac{3 + 3 + 15}{ - 3} \\ \rm \mapsto \: \frac{6 + 15}{ - 3} \\ \rm \mapsto \: \frac{21}{ - 3} \\ \rm \mapsto \: - 7[/tex]
