Better word choices are joyful, gleeful, content, or pleased.
I think is going to be A historian for the web site of Sioux tribe of Montana. I hope this is correct.
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.