Question

3. Find the sum of: (a) 12, -5 (b) -4,-9​

Answer 1

Answer:

− 5 − 1

Step-by-step explanation:

1 2 − 5 − 4 − 9

 − 1 − 5

− 1 − 5

− 5 -1

Answer 2

Answer:

We get the sum of the given data is$a)7\ b)-13$.

Step-by-step explanation:

Given:

(a) 12, -5

(b) -4,-9​

We have to find the sum of the above data.

• As we know that, when one negative and one positive integer are to be added, then the operation performed, is subtraction and the difference obtained has a sign of the greater integer.
• And both negative integers are to be added, then the operation performed is addition and the solution obtained has a sign of the greater integer.

We are solving in the following way:

We have,

(a) 12, -5

(b) -4,-9​

(a) 12, -5

The sum of 12 and -5 will be:

$=>12+-5\\=>12-5\\=>7$

(b) -4,-9​

The sum of -4 and -9 will be:

$=>-4+-9\\=>-4-9\\=>-13$