Question

4. Find the sum of additive inverse and multiplicative inverse of 9.

Answer 1

additive inverse of 9 = 9/1 = -9/1

Multiplicative inverse of 9 is 1/9

Answer 2

Additive inverse :

• It is when we reverse the sign of the given number .
• If sign is positive (+) , then we change it into negative (-) and vice versa .

Multiplicative inverse :

• It's the reciprocal of the given number .

Question :

Find the sum of additive inverse and multiplicative inverse of 9 .

Additive inverse of 9 :

-9

Multiplicative inverse of 9 :

1/9

Sum of additive inverse and multiplicative inverse :

= -9 + 1/9

Taking 9 as LCM .

= -9/1 + 1/9

-= 80+1/9

= -80/9

Product of integers :

• If there is a multiplication of positive (+) and negative (-) , then the product will be negative (-) .
• If there is a multiplication of positive (+) and positive (+) , then product is positive (+) .
• If there is a multiplication of negative and negative , then product is positive .

Addition of integers :

• If there is addition of positive (+) and negative (-) , then the sum will be negative (-) .
• If there is a addition of positive (+) and positive (+) , then sum is positive (+) .
• If there is a addition of negative and negative , then sum is positive .

Subtraction of integers :

• If there is a subtraction of positive (+) and negative (-) , then the difference will be negative (-) .
• If there is a subtraction of positive (+) and positive (+) , then difference is positive (+) .
• If there is a subtraction of negative and negative , then difference is negative .