Question

show that rationals are associate under addition​

Answer 1

Answer:

Take any three rational numbers a, b and c. Firstly add a and b and then add c to the sum. (a + b) + c. Now again add b and c and then a to the sum, a + (b + c). Is (a + b) + c and a + (b + c) same? Yes and this is how associative property works. It states that you can add or multiply numbers regardless of how they are grouped.

For example, given numbers are 5,-6 and 23

( 5 – 6 ) + 23

= -1 + 23

= – 13

Now, 5 + ( -6 + 23 )

= – 13

For example, given numbers are 5, -6 and 23

( 5 – 6 ) + 23

= -1 + 23

= – 13

Now, 5 + ( -6 + 23 )

= – 13.