Question

Add -5 and 7?? With solution

Answer 1

• We have to evaluate the above expression by using the given data.

            Given data:- $-5+7.$

            To find:-Value of the given expression.

            Solution:-  

• Adding two or more numbers together is known as an addition.

• Addition as denoted by(+).

• Properties of addition are as follows,

1. Identity property of zero.
2. Inverse property.
3. Commutative property.
4. Associative property.

         Therefore,

        $-5+7\\=2.$

      Hence we will get the value $2.$

Answer 2

To add : $-5$ and $7$

Solution :

• Addition is the arithmetic operation of adding two numbers.
• Addition  rules for integers:

1. If two negative integers are to be added then addition operation is performed and sum obtained has negative sign .$(-) + (-) = -$
2. If one negative and one positive integers are to be added then operation performed is subtraction and difference obtained has sign of greater integer. i.e.  $(-) + (+)= sign \ of \ greater\ integer$
3. If both positive integers are to be added then operation performed is addition and sum obtained has positive sign  i.e. $(+)+(+)=+$

• Therefore according to rule $2$  we add ( $-5$ and $7$ ) .

• $(-5 )+ (7 ) = 2$  

Hence, $2$ is the sum of  ( $-5$ and $7$ ) .