Question

what should be added to twice the rational number minus 7 by 3 to get 3 by 7​

Answer 1

Answer:

107/21

Step-by-step explanation:

Let the rational number be  \frac{a}{b} .  

Now, an equation can be formed.  

Solve and find the value of  \frac{a}{b} .  

2( \frac{-7}{3} ) +  \frac{a}{b} =  \frac{3}{7}  

\frac{-14}{3} +  \frac{a}{b} =  \frac{3}{7}  

- \frac{14}{3} +  \frac{a}{b} =  \frac{3}{7}  

\frac{a}{b} =  \frac{3}{7} +  \frac{14}{3}  

\frac{a}{b} =  \frac{107}{21}  

∴ The required rational number is  \frac{107}{21}