Ex.1.2 Q2 Integers - NCERT Maths Class 7

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a) Write the 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 \(–3.\)

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What is known?

The two integers whose sum and difference is given.

What is unknown?

Sum and difference of a pair of integers.

Reasoning:

Add or subtract the two values.

Steps:

a) Let us have \(-2\) and \(-10\)

\[\begin{align}\therefore{\rm{Difference}}& = (-2)\,-(-10) \\&=- 2 + 10\\&= 8\end{align}\]

b) Let us have \(-10\) and \(5\)

\[\begin{align}\therefore\rm{Sum} &= -10\,+\,5 \\&=\,-5\end{align}\]

c) Let us have \(-2\) and \(1\)

\[\begin{align}\therefore\rm{Difference} &= -2\,-\,1\\&=\,-3\end{align}\]

 

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Ex 1.2 | Question 2
This video solutions covers Class 7 NCERT Maths chapter 1 (Integers, exercise 1.2 Question 2)
  
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