Question

What should be added twice the rational number -7/3 to get 3/7 ? ​

Answer 1

`\qquad \qquad\huge \underline{\boxed{\sf Answer}}`

let the required number be ' x '

Now, let's form a equation as per the question ~

`\qquad \sf  \dashrightarrow \: - \bigg(( 7)/(3) * 2 \bigg ) + x = (3)/(7)`

`\qquad \sf  \dashrightarrow \: - ( 14)/(3) + x = (3)/(7)`

`\qquad \sf  \dashrightarrow \: x = (3)/(7) + (14)/(3)`

`\qquad \sf  \dashrightarrow \: x = (9 + 98)/(21)`

`\qquad \sf  \dashrightarrow \: x = (107)/(21)`