You would distribute then combine like terms to get your answer.
The answer is +17 or just 17 :)
Answer:
x=9
Step-by-step explanation:
Answer:
I believe your answer would be 
Step-by-step explanation:
Take 510, divide it by 30.
510/30 = 17
This means, every 17 red blood cells, there is 1 platelet, or 
Hope this helps! - Zac