B.!!!!!! !!!!
that’s the answer
Simply take the numerator (3) and denominator (7) and add them together.
3+7 = 10, which means that the ratio will provide parts that are in multiples of 10 depending on the total
so take 10x = 800
x = 80.
Then multiply this by the numerator and denominator
3*80/7*80 = 240/560.
I did this on a calculator may or may not be correct but I got 18
Answer:
5c + 1.3d - 6.3
Step-by-step explanation:

Hope this helps.