- how would i work out this problem?

-5 + -4=

Think of a number line. Start with -5 and then go back 4 more places.

Two negatives added together equal a negative.

http://www.dositey.com/addsub/negnum.htm

http://www.eduplace.com/math/mathsteps/6/b/index.html

if you know the rule stay change opposite.

it might just give you a clue.

-5+-4=
two negatives added together equal a negative.

To work out the problem -5 + -4, you need to perform addition of the given numbers. Here's a step-by-step explanation of how to solve it:

1. Start with the first number, -5.
2. Next, add the second number, -4, to it.
3. To add two negative numbers, you simply add their magnitudes (absolute values) and keep the negative sign.
|-5| + |-4| = 5 + 4 = 9
4. Since both numbers have a negative sign, the final answer is -9.

Therefore, -5 + -4 = -9.