Question

please find the answers​

Answer 1

Answer:

Let us say that we have three numbers, 'a,' 'b,' and 'c,' for addition, the associative law for rational numbers states that: a + (b + c) = (a + b) + c, and for multiplication, the associative law for rational numbers states that: a*(b*c) = (a*b)*c. For example – we have three numbers, 5, -6, and 2/3.

Answer 2

ANS.

Multiplicative inverse

SOLUTION

The multiplicative inverse for any number n is 1n where n≠0.  The product of a number and its multiplicative inverse is 1.

Let us take a number n=−1929, then according to the definition, the multiplicative inverse of n is  

1n=29−19

Now consider the product of n and 1n as follows:

−1929×29−19=1

Hence, multiplicative inverse property is used in −1929×29−19=1