Answer:
A pronoun.
Explanation:
A pronoun takes the place of one or more nouns.
There are an infinite number of them.
Pick any number, multiply the 4 and the 5 both by it, and write the new
numbers in place of them. The new fraction is equivalent to 4/5 .
Instead of reducing a fraction to lower terms, what you have just done is
expand the fraction to higher terms.
Not rushing and slowing down and going through and explaining each slide
