Question

(a) Write a pair of negative integers whose difference gives 8.
(b) Write a negative integer and a positive integer whose sum is –5.
(c) Write a negative integer and a positive integer whose difference is –3.
NCERT Class 7th Mathematics Chapter 1 Integers

Answer 1

Hi ,

We know that ,

Set of integers = Z = { ...-3,-2,-1, 0, 1 ,2 ,3 ,4 ...}

a ) let -4 and -12 two integers

Difference = -4 - ( -12 )

= -4 + 12

= 8

Therefore ,

Required pair is -4 and -12

b ) let -11 and 6 are two integers

Sum of these numbers = -11 + 6

= -5

Therefore ,

Required pair is -11 and 6

c ) it is not possible .

Difference of a positive number and negative

number is always a positive number.

I hope this helps you.

:)

Answer 2

Answer:

C)Positive integer=1

Negative integer =-2

Difference =-2-1

=-3

Answer 3

Answer:

C)Positive integer=1

Negative integer =-2

Difference =-2-1

=-3