Question

verify commutative property of addition and associative property of multiplication for minus 2 upon 3 5 upon 4 of 7 upon 12​

Answer 1

Step-by-step explanation:

9/11 and 2/13

Adding both the numbers,

=9/11+2/13

Taking L.C.M. we get,

=(117+22)/143

We get,

=139/143

And 2/13+9/11

Again taking L.C.M. we get,

=(22+117)/143

We get,

=139/143

Therefore,

9/11+2/13=2/13+9/11.