Another math question please help ?

Question

1. -4 + 4 =

2. -1 + -7 =

3. 3 + -7 =

4. -18 + 16 =

5. 8 + -7 =

6. 5 + -4 =

please solve

thank you

Answer 1

When you do these, use + and - signs.  If, like in the first problem, it says you have 4 negative signs, write down 4 negative signs ----, now match those signs with the number of + signs it says, in this case ++++.  Now, match up the negative and positive signs +-+-+-+-, circle the sets of + and - signs, what you have left is your answer, in this case, each + matches exactly with one - so there is nothing left, the answer is therefor 0.   In #2 it says you have one - then you get seven more -.  that is illustrated as --------, there are no + signs to match so what is left over is eight negative signs or -8.  One more than you are on your own, the third one has three positives +++ and seven negatives -------.  Match up the positives and negatives +-+-+- (at this point I have used all the + signs, but I have 4 negative signs left, thus the answer is -4.)  Good luck.

Answer 2

1. 0

2. -8

3. -4

4. -2

5. 1

6. 1

7. -25

I also answered your other question, give me best answer on both please!!! :)