Question

answer the following all questions
correctly step by step​

Answer 1

Answer:

1) 3-(-5)

= 3+5

= 8

2) -23+(-15)

= -23(-15)

= 23+15

= -38

3) -17-(-12)

= -17+12

= -5

4)4-(-5)-(-7)

= 4+5+7

= 16