Question

Add the following:
(i) $\frac{4}{7}$ and $\frac{5}{7}$ and (ii)$\frac{7}{-13}$ and $\frac{4}{-13}$

• A. (i) $\frac{-9}{7}$ and (ii) $\frac{11}{-13}$
• B. (i) $\frac{9}{7}$ and (ii) $\frac{11}{-13}$
• C. (i) $\frac{9}{7}$ and (ii) $\frac{11}{13}$
• D. (i) $\frac{-9}{7}$ and (ii) $\frac{11}{13}$

Answer 1

Answer: (B)

(i) $\frac{9}{7}$ and (ii) $\frac{11}{-13}$

$\left(i\right)\frac{4}{7}+\frac{5}{7}=\frac{(4+5)}{7}=\frac{9}{7}$

(equal denominator)

$\left(ii\right)\frac{7}{-13}+\frac{4}{-13}=\frac{(7+4)}{-13}=\frac{11}{-13}$