Question

For given pair of rational numbers, verify commutative property of addition of rational numbers 5/9 and 5/-12

Answer 1

Answer:

5/9+5/-12

lcm =36

20/36+-15/36

=5/36

5/-12+5/9

-15/36+20/36

=5/36

notice that we obtained the same answer even though we changed the order. thus we know that addition is commutative

Answer 2

Answer:

hence verified

Step-by-step explanation:

5/9+5/-12=5/-12+5/9

L.C.M. of 9&18=36

20/36+-15/36=-15+20/36

20-15/36=-15+20/36

5/36=5/36

L.H.S=R.H.S

hence verified .