How would you solve this problem?

Question

(s-4/9)(-2/3)=-4/5

Answer 1

(9s-4)/9 (-2/3) = -4/5
-2(9s-4)/27 = -4/5

Multiply both sides by 27*5 and you have

-2(5)(9s-4) = -4*27
-90s+40 = -108
and so on...