1. 75
you would remove the parentheses and it would be 2- -73 and since a negative and a negative make a positive it makes it 2+73 which equals 75
2. 18.6
remove the parentheses which leaves you with 39-20.4 then subtract the numbers and you are left with 18.6
3. 87.086
remove the parentheses and since a negative and a negative equal a positive your sign changes 67.086+20 then add the numbers and you get 87.086
4. 41
remove the parentheses and a negative with a positive makes a negative so the problem looks like this: 60-19 then subtract the numbers and you get 41
5. 22.95
subtract the numbers 87-64.05 and you get 22.95
6. 124
remove the parentheses and since a negative and a negative makes a positive then the sign changes, then you add 93+31 and you get 124
7. 19.02
add 2+17.02 together and you get 19.02
8. -42.992
remove the parentheses and the sign inside the parentheses remain the same. 3.008-46= -42.992
9. 133.192
add 85.082 and 48.11 together and you get 133.192
10. 96.95
add 56.95 and 40 together to get 96.95
11. -20.005
flip the two numbers so that you can subtract the smaller number from the larger one so now it looks like this -(86.005-66) then subtract to get -20.005
12. 24.09
remove the parentheses and a negative with a negative make a positive so you add 20 with 4.09 and get 24.09
13. 13
subtract. 68-55= 13
14. 75.12
remove the parentheses and a negative with a negative makes a positive then add 17+58.12 to get 75.12
15. 95.001
add the two numbers together 17.001+78= 95.001
hope this helps! :3