Question

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

Answer 1

$$\begin{gathered} \mathrm{Let}\mathrm{the}\mathrm{number}\mathrm{to}\mathrm{be}\mathrm{added}\mathrm{x}. \\ \mathrm{A}.\mathrm{T}.\mathrm{Q} \\ 2\left(\frac{-7}{3}\right)+\mathrm{x}=\frac{3}{7} \\ \frac{-14}{3}+\mathrm{x}=\frac{3}{7} \\ \mathrm{x}=\frac{3}{7}+\frac{14}{3} \\ =\frac{9+98}{21}=\frac{107}{21} \\ \mathrm{So},\mathrm{Number}\mathrm{to}\mathrm{be}\mathrm{added}\mathrm{is}\frac{107}{21}. \end{gathered}$$