If you mean

you can first substitute
to get

and so

3/8+4/8=7/8
It moves 3/8 first, then 4/8.
Answer:
I'm guessing what your asking is this equation or expression in fraction form? If so, then it would be 16/4 which equals 4.
Step-by-step explanation:
I think it’s 6 to the exponential power or a number vs a number to the power of 6
1m = 100cm = 1000mm = 1,000,000,000nm
1Mm = 1,000,000m
A. 0.000699 Mm = 0.000699 · 1,000,000 m = 699 m
B. 914,879,710 nm = (914,879,710 : 1,000,000,000) m = 0.914879710 m
C. 51,723 cm = (51,723 : 100) m = 517.23 m
Answer: C. 51,723 cm = 517.23 m ≈ 527 m