Consider two CFs:

a positive one at the beginning of Year 2020 in the amount of $131 and

a negative one at the beginning of Year 2047 in the amount of $125. What would be the equivalent value of these CFs at the beginning of Year 2035 at an interest rate of 2.6%?

Then it asks to reverse them

Consider two CFs:

a negative one at the beginning of Year 2020 in the amount of $127 and

a positive one at the beginning of Year 2045 in the amount of $130. What would be the equivalent value of these CFs at the beginning of Year 2053 at an interest rate of 1.8%? (answer: -$78.87)

how would i solve to fint he answers provided please show steps if this was done on paper not in excel