Question

What should be added to twice the rational number -5/2 to get 2/7

Answer 1

The number to be added  is $\frac{37}{7}$.

Step-by-step explanation:

Let the number to be added be x.

The expression is:

$x+(2\times \frac{-5}{2})=\frac{2}{7}$

Compute the value of x as follows:

$x+(2\times \frac{-5}{2})=\frac{2}{7}$

           $x-5=\frac{2}{7}$

                 $x=\frac{2}{7}+5$

                 $x=\frac{2+35}{7}$

                 $x=\frac{37}{7}$

Thus, the number to be added  is $\frac{37}{7}$.

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