Consider the example
(3x+5) - (x-10)
When we subtract off the (x-10), we are basically subtracting off x and also subtracting off -10. This is the same as adding on 10 because -(-10) = 10
So we would have these steps
(3x+5)-(x-10)
3x+5-x+10
2x+15
Often students forget to distribute the negative all the way through and would have 3x+5-x-10 as an incorrect step. You need to multiply that -1 through to each term, so that's why the distributive property is used.
Yes, she bought 96 inches of woods. Christy will have 4 inches of wood remaining.
I’m confused because you’re saying the hook is in the ground but it’s 20 feet from the base?
0.25 = 
1.25 = 1 = 
there are 5 quarters thus each person woud get one quarter
