In the expression, the coefficients are 7/9 and 6.
JUST IN CASE YOU DON’T UNDERSTAND: coefficients are numbers that are placed next to variable(s) - aka x or y. So for instance, in the following: 7/9 x, 7/9 is the coefficient since it’s paired with an alphabet letter or a variable.
I hope that helped and that it wasn’t too confusing. Brainliest answer is always appreciated!