Answer:x=11Step-by-step explanation:6x-3(x+8)=9Using the distributive property, we can turn 6x-3(x+8)=9 into 6x-3x-24=9, which simplifies to 3x-24=9 by combining like terms. Now, if we add 24 to both sides, we get 3x=33. By dividing both sides by 3, we get x=11.Check:66-3*19=966-57 does in fact equal 9.