62.95, 63.37, 63.7 is least to the greatest.
When you are finding the mode your looking for the number that shows up the most. In this the mode is 58.
Yes, that is true, you have to simplify -42/-45 to be able to see if they are equivalant.
There are 10 rows of 3 colums of "x"'s, so.. 3x10 or 30 "x"s, and we know that's 5/3 of the original... the original will be one whole or 3/3 or 1
thus

solve for "x"