Question

The missing value in $........+\frac{2}{7}=\frac{2}{7}+\frac{-11}{13}$ is

• A. $\frac{2}{7}$
• B. $\frac{-11}{13}$
• C. $\frac{-2}{7}$
• D. $\frac{11}{13}$

Answer 1

Answer: (B)

$\frac{-11}{13}$

Addition is commutative for rational numbers. i.e. $a+b=b+a$
$\therefore \frac{-11}{13}+\frac{2}{7}=\frac{2}{7}+\frac{-11}{13}$