ANSWERS AND EXPLANATIONS TO QUIZ
|
Questions |
Answers |
| What is the
additive inverse of (-19)?
|
The additive inverse is the opposite of the number. When added to (-19), the sum is 0. Therefore the answer is 19. |
| What is the
additive inverse of 21?
|
The additive inverse is the opposite of the number. When added to (21), the sum is 0. Therefore the answer is -21. |
| Solve for x:
x + 13 = 21
|
x + 13 = 21 x + 13 + (-13) = 21 + (-13) x = 8 |
| Solve for x:
x + (-10) = 10
|
x + (-10) = 10 x + (-10) + 10 = 10 + 10 x = 20 |
| Solve for x: 23 +
x = 50
|
23 + x = 50 23 + (-23) + x = 50 + (-23) x = 27 |
| Solve for x:
x - 18 = -50
|
x - 18 = -50 x -18 + 18 = -50 + 18 x = -32 |