Why is it that |-3| = |3|?

Step-by-step explanation:

I I if these two lines surround a number or a expression it means that the expression will now be a positive expression because of absolute value.

In this case we have I-3I because the lines surround the negative three it will turn into a positive three. Same with any expression...

Hope this helps.

since proposition states that a number is greater than 25, if is true then the number must actually be greater than 25.

this implies that all possible options, except 24, can be accepted