Question

If A=B=Z (set of integers), then find A+B ​

Answer 1

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Answer 2

Given:

A = B = Z (set of integers)

To find:

If A = B = Z (set of integers), then find A+B ​

Solution:

From given, we have,

A = B = Z

Where Z represents a set of integers

Z = {........ -1, 0, +1, ...........}

Thus, the set Z is composed from the elements of N and their opposed.

When A = B,

Then for sure their sum,

A + B = 2A = 2B

Where 2A = 2B ∈ Z

Thus, A + B can be represented as,

When A = B = 2,  ⇒ {A + B} = {4}

When A = B = 3, ⇒ {A + B} = {6}

and so on.

So, A + B = 2 {Z}