Question

find the value of : (30) + (-23)+(-63)+(+55)

Answer 1

Answer:

The value of $(30) + (-23)+(-63)+(+55)$ is -1 .

Step-by-step explanation:

Given -

$(30) + (-23)+(-63)+(+55)$

To find -

The value of $(30) + (-23)+(-63)+(+55)$

Solution -

As,

(-) multiplied by (+) equal to (-)

∴ Given equation becomes,

$30-23-63+55$

When two subtraction sign occurred then addition happed with negative sign in a answer.

So, Add 23 and 63 we get

=  $30-86+55$

When one subtraction and one addition sign occurred then substraction happed with higher value sign in a answer.

Substract 86 from 55 we get

= $30-31$

= $-1$

∴ The value of $(30) + (-23)+(-63)+(+55)$ is -1 .

Answer 2

To solve : $(30) +(-23)+(-63)+(+55)$

Solution :

• Addition is the arithmetic operation of taking off difference between 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 . i.e. $(-)+(-)=-$
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 added and sum obtained is positive integer i.e.$(+)+(+)= +$

• Therefore according to above rule we solve  $(30) +(-23)+(-63)+(+55)$  

      $= 30 -23-63+55 \\= -1$

Hence, $-1$  is the answer .