Question

Add (a) -5/7 and 3/7​

Answer 1

Step-by-step explanation:

$\: \: \: \: \: \: \: \: \: = \: \: \: \frac{ - 5}{7} + \frac{3}{7} \\ \\ \: \: \: \: \: = \frac{ - 5 + 3}{7} \\ \\ = \frac{ - 2}{7} \\ \\ \boxed{ \implies - \frac{2}{7} }$

Answer 2

Answer:

On adding  $\frac{-5}{7}$  and $\frac{3}{7}$ we get , $\frac{-2}{7}$ .  

Step-by-step explanation:

To add : $\frac{-5}{7}$  and $\frac{3}{7}$  

Solution:

• As per given condition we write , $\frac{-5}{7}+\frac{3}{7}$
• To find the sum of given rational numbers we get need to equalize denominators of both the rational numbers by taking LCM if they are not equal .
• But , here we can see that both denominators are equal ,therefore we directly add numerators by taking denominator common for both of them .  
• Also we know that , 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.  $(-)+(+)= sign \ of \ greater\ nteger$
• Therefore, we get, $\frac{-5}{7}+\frac{3}{7}=\frac{-5+3}{7}$

                                                    $= \frac{-2}{7}$