Question

what number should be added to twice the rational number -2/3 to get 3/7?​

Answer 1

Answer:

$x=\frac{37}{21}$

Step-by-step explanation:

let the number be x

According to the question

$x + 2 (\frac{-2}{3} )=\frac{3}{7} \\=> x - \frac{4}{3} =\frac{3}{7} \\=> \frac{3x-4}{3}=\frac{3}{7} \\=> 7(3x-4)=9\\=> 21x - 28 =9\\=> 21x = 37\\=> x=\frac{37}{21}$