Just subtract and then add then you should get your answer.
Answer:
Step-by-step explanation:

The ones place value is four
So the greatest common factor of 40 and 16 is 8
40/8 : 16/8
5:2
The simplest form of the ratio 40:16 is 5:2
Hope this helps!
\left[x \right] = \left[ 16+3\,y\right][x]=[16+3y] totally graphic doing ur sheets