Since 25% is 1/4 divide 28 by 4 to get your answer of 9.5
If they are looking to have them all simplified, this is how they should look.
4y - 4
4y + 4
4y + 1
A negative times a negative is a positive. I am not sure if that's the question, but hopefully that helps if it was.
Factor out the GCF, which is 4.... 4(4a+3b)
