Simplify: 1.) 1/5b-5(2/5a-1/10b)+4a

2.) 2.3c-5.25(2.6d-2.8)-7.9

3.) 4(4y-7y2)-9(5y+2)

4.) 2/3a+6-3/5a-1

5.) 5/4x-8y-1/4x+7y+3

This is what i found “an explicit formula designates the nth term of the sequence, as an expression of n (where n = the term's location). it defines the sequence as a formula in terms of n. this example is an arithmetic sequence(the same number, 5, is added to each term to get to the next term).” i hope this you for what your looking for. can you plz mark me brainliest?