Question

Pls dear friend ans with step by step explanation very urgent do not post irrelevant answers if u i will report ​

Answer 1

Answer:

a. (-1)+(-2)=-3.

b. (-15)-10=-5.

Now, please mark me as brainiest if it helped you

Answer 2

Answer:

see the image for explanation

hope it helps you out ☺️

please mark me brainliest