adding and subtracting integers

a) -8+5=-3
b) you can take -4 and see how far away from 0 it is (its 4) than u add 6 to 0= 6
c) you take 4 and minus see how far away from 0 it is then subtract 5 more b/c 4+5 =9 so the answer is -5
d) turn the minus sighns into plus signs and then add 8 to -8=0 then add 1 more to equal 9