Question

what should be aded to twice the rational number -7 to get 3
3 7

Answer 1

Dear student
$$\begin{gathered} Lettherequirednumberbex. \\ ThenAccordingtoquestion \\ x+2\left(\frac{-7}{3}\right)=\frac{3}{7} \\ \Rightarrow x-\frac{14}{3}=\frac{3}{7} \\ \Rightarrow \frac{3x-14}{3}=\frac{3}{7} \\ \Rightarrow 7\left(3x-14\right)=9 \\ \Rightarrow 21x-98=9 \\ \Rightarrow 21x=107 \\ \Rightarrow x=\frac{107}{21} \\ So,therequirednumberis\frac{107}{21}. \end{gathered}$$
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