Fractions need common denominator to add or subtract them because without denominators a fraction is not a fraction, it is a whole number
Example - 2/8 is a fraction
but 2 is not a fraction
20.015
Because there are 3 numbers before a thousand so 3 numbers behind the decimal are the thousandths.
Answer:
I think neither but i suggest you not take my word for it.
Step-by-step explanation:
