Me i don't understand this question

To find their common denominator, you must first find the lowest common multilple for 8 and 3.
8 × 3 = 24

24 is the lowest common multilple. Now you just have to make 24 the common denominator by multiplying the fractions like so:


Now they both contain the same denominator, we can compare the equasions easier that way:

If we use the original fractions, the answer is:

+1,000)=g7e=mc2-g=7 because if you know algebra you should know g=7 to get your answer