Can someone help me on these two cuz honestly I don't know

1. -a + b = depends on which integer is bigger, if b is bigger than a, then it would be positive. If -a is bigger, then it will be negative

2. a-(-b) = positive

3. -a * b = negative

a. 87 + 65    b. -58+42

c. 73+(-55)   d. -47+(-30)

Step-by-step explanation:

Remember:

two positives(multiply or divide) = positive

two negatives(multiply or divide) = positive

a positive and a negative(multiply or divide) = negative

two positives(addition) = positive, (subtract) = depends on which integer is bigger

two negatives(addition) = positive, (subtract) = depends on which integer is bigger

-a+-b= negative

a-(-b) =positive

-a-b= negative

Step-by-step explanation: