000 In base 0, what is -0000 + -0? -0000 In base 00, what is 0 + -00? -00 In base 0, what is 0 - 0000? -0000 In base 00, what is 0 - -000? 000 In base 0, what is -0000 + -0? -0000 In base 0, what is 0000000 + 00? 0000000 In base 0