Question

sum of two rational numbers is -4/21 if one of them is -3/14 find the other ?​

Answer 1

Step-by-step explanation:

-3/14+x=-4/21

x=-4/21+3/14

x=1/7(-4/3+3/2)

x=1/7[(-8+9)/6]

x=1/42

So,the other rational number is 1/42

Answer 2

Answer:

$\frac{1}{42} \: \: \: \: \: is \: the \: answer$

Step-by-step explanation:

let the 2 two rational numbers be x and y

then

$x + y = \frac{ - 4}{21} \\ here \: y = \frac{ - 3}{14} \\ so \: putting \: in \: the \: above \: formula \: we \: will \: have \\ \\ x - \frac{3}{14} = \frac{ - 4}{21}$

by adding 3/14 on both sides...

$x = \frac{ - 4}{21} + \frac{3}{14}$

$x = \frac{1}{42}$