Question

II. Perform the following operations on Integers :-
1. (+5) - (+2)
2. (-5) - (-2)
3. (+5) - (-2)
4.(-5)- (+2)
5. (+7) - (+3)
6. (-7) - (-3)
7. (+7)-(-3)
8. (-7) - (+3)
9. (+9) - (+4)
10. (-9) - (-4)​

Answer 1

Concept:

Additivity and negative numbers

Given

1. (+5) - (+2)

2. (-5) - (-2)

3. (+5) - (-2)

4.(-5)- (+2)

5. (+7) - (+3)

6. (-7) - (-3)

7. (+7)-(-3)

8. (-7) - (+3)

9. (+9) - (+4)

10. (-9) - (-4)​

Solution:

We know

$-(-a)=a\\-(a)=-a\\+(a)=a\\+(-a)=-a$

1. (+5) - (+2)=3

2. (-5) - (-2)=-3

3. (+5) - (-2)=7

4.(-5)- (+2)=-7

5. (+7) - (+3)=4

6. (-7) - (-3)=-4

7. (+7)-(-3)=10

8. (-7) - (+3)=-10

9. (+9) - (+4)=5

10. (-9) - (-4)​=-5

#SPJ3

Answer 2

Answer:

The answer for the following problems are (i)3 ,(ii)-3 ,(iii)7 ,(iv)-7 ,(v)4 ,(vi)-4 ,(vii)10 ,(viii)-10 ,(ix)5 ,(x)-5  

Step-by-step explanation:

As per the problems given in the question,

we are going to use the following concepts

$-(-x) = x\\- (x) = x\\+(x) = x\\+(-x) = -x\\-(+x) = -x$

Now, applying the concepts we have,

$1. (+5) - (+2)\\=5-2\\=3$

$2. (-5) - (-2)\\=-5+2\\=-3$

$3. (+5) - (-2)\\=5+2\\=7$

$4.(-5)- (+2)\\=-5-2\\=-7$

$5. (+7) - (+3)\\=7-3\\=4$

$6. (-7) - (-3)\\=-7+3\\=-4$

$7. (+7)-(-3)\\=7+3\\=10$

$8. (-7) - (+3)\\=-7-3\\=-10$

$9. (+9) - (+4)\\=9-4\\=5$

$10. (-9) - (-4)\\=-9+4\\=-5$

The answer for the following problems are (i)3 ,(ii)-3 ,(iii)7 ,(iv)-7 ,(v)4 ,(vi)-4 ,(vii)10 ,(viii)-10 ,(ix)5 ,(x)-5  

#SPJ2