The answer is 5. Simply add the numbers together arithmetically as you would for the problem two plus two. To check your work, a calculator is the best option.
-13
-4 - (+9) = -4 + (-9) = -13
5
9 + 9 + 9 + 9 + 9 + 9 + 6 + 6 + 6 + 6 + 2 + 2 + 23 + 3 + 3 + 4 + 4 + 4 = 123
9 + 4 + 4 + 4 + 4 + 4 + 5 = 34
Yes because they all add up to 18
30! 29
Commutativity.
9 + 510 + 4 = 523
9 + 4 + 7 + 8 = 28
The additive property.
5 + 4 = 9It's 9.
4 * (-4) + 9 = -7; so -7 is equivalent to 4 times -4 plus 9.
4 + 4 + 1 = 9
14 + 5 + 13 + 4 + 9 = 45