Hey there!
Guide
2 negatives = positive
2 positives = positive
1 negative & 1 positive = negative
1 positive & 1 negative = negative
Negatives are on the LEFT side of 0
Positives are on the RIGHT side of 0
Negatives are BELOW 0
Positives are ABOVE 0
ANSWERING YOUR QUESTIONS
Question #1
-3 - (-5)
= -3 + 5
= 2
Therefore, your answer is: 2
Question #2
-4 + 6
= 2
Therefore, your answer is: 2
Question #3
-5 + (-6)
= -5 - 6
= -11
Therefore, your answer is: -11
Good luck on your assignment & enjoy your day!
~Amphitrite1040:)
Random note: You can use a number line to tackle problems like this. :)