Question

the sum of two rational number is -4/7 if one number is-2/3find the other number is​

Answer 1

Step-by-step explanation:

let the other number be x

-2/3+x=-4/7

x=-4/7+2/3

LCM OF 7,3=21

x=-4*3/7*3+2*7/3*7

x=-12/21+14/21

x=2/21

2/21 is the right answer

Hope it helps ✌✌

Answer 2

Answer :-

Given :-

$\sf{Sum\ of\ two\ numbers}$ = $\sf{\dfrac{- 4}{7}}$ ;

$\sf{One\ number}$ = $\sf{\dfrac{- 2}{3}}$

To Find :-

$\sf{Other\ number.}$

Solution :-

$\sf{Let\ the\ other\ number\ be\ 'x'.}$

$\sf{\implies{\dfrac{- 2}{3} + x = \dfrac{- 4}{7}}}$

$\sf{\implies{x = \dfrac{- 4}{7} + \dfrac{2}{3}}}$

$\sf{\implies{x = \dfrac{- 12 + 14}{21}}}$

$\sf{\implies{x = \dfrac{2}{21}}}$

$\sf{So,\ the\ other\ number\ is\ :-}$

$\sf{\implies{\boxed{\dfrac{2}{21}}}}$