What is the seventh term of (3x + 2y) 9?

use the Pascal triangle:

1

1|1

1|2|1

1|3|3|1

1|4|6|4|1

1|5|10|10|5|1

1|6|15|20|15|6|1

1|7|21|35|35|21|7|1

1|8|28|56|70|56|28|8|1

1|9|36|84|126|126|126|84|36|9|1

I support your ask is concerned with descending exponents

The answer will be 84 * (3x) ^3 * (9^6) = 1205308188 x^3