Answer:
9a + 7c² + 5 + c
Step-by-step explanation:
[tex]16a + {7}^{2} + 5 - 7a + c[/tex]
[tex]16a - 7a = (16 - 7)a = 9a[/tex]
[tex]\boxed{\green{= 9a + {7c}^{2} + 5 + c}}[/tex]
