Verify commutativity of addition of rational numbers for each of the following pairson of rational numbers:
(i) and
(ii) and
(iii) and
(iv) and
(v) 4 and
(vi) -4and
(i) The addition of rational number is commutative
i.e, if and are any two rational numbers, then
+ = +
Verification: In order to verify this property,
Let us consider two expressions:
+
And,
+
We have:
+ = +
=
=
And,
+ = +
=
=
Therefore,
+ = +
(ii) The addition of rational number is commutative
i.e, if and are any two rational numbers, then
+ = +
Verification: In order to verify this property,
Let us consider two expressions:
+
And,
+
We have:
+ = +
=
=
And,
+ = +
=
=
Therefore,
+ = +
(iii) The addition of rational number is commutative
i.e, if and are any two rational numbers, then
+ = +
Verification: In order to verify this property,
Let us consider two expressions:
+
And,
+
We have:
+ = +
=
=
And,
+ = +
=
=
Therefore,
+ = +
(iv) The addition of rational number is commutative
i.e, if and are any two rational numbers, then
+ = +
Verification: In order to verify this property,
Let us consider two expressions:
+
And,
+
We have:
+ = +
=
=
And,
+ = +
=
=
Therefore,
+ = +
(v) The addition of rational number is commutative
i.e, if and are any two rational numbers, then
+ = +
Verification: In order to verify this property,
Let us consider two expressions:
4 +
And,
+ 4
We have:
4 + = -
=
=
And,
+ 4 = +
=
=
Therefore,
4 + = + 4
(vi) The addition of rational number is commutative
i.e, if and are any two rational numbers, then
+ = +
Verification: In order to verify this property,
Let us consider two expressions:
+
And,
- 4
We have:
-4 + = -
=
=
And,
- 4 = -
=
=
Therefore,
-4 + = -4