I think the first one might be 18 second might be 10
2 7/8 + 2 3/8= 4 10/8, which equals 5 2/8, which is also equal to 5 1/4
<span>9.15E18 --- how we learn to write it</span>
I would like to help but, I need more background information.
The LCM is: <span>2,7,7,2,0.</span>