Ummm explain the question more but b seems to make the most sense
Hope this helps but I think it is A.)addition property of equality.
Answer:
x = 4.5
Step-by-step explanation:
there's definitely other ways to solve this, but I used a proportion.

Then you can make this equation:
14x = 3.5 * 18
I solved for it and got 4.5 .
30+5=5+30 with commutative property or 30+5=35
After converting to common denominator:
8/18, 7/18, 6/18, 5/18
so the next fraction is 4/18, but if you have to simplify it’s 2/9