Question

e13b
(9) \\(\frac{6}{7} + \frac{3}{7} =\\)
(10) \\(\frac{4}{9} + \frac{7}{9} =\\)
(11) \\(\frac{5}{11} + \frac{6}{11} =\\)
(12) \\(\frac{8}{13} + \frac{7}{13} =\\)
(13) \\(\frac{8}{15} + \frac{8}{15} =\\)
(14) \\(\frac{11}{17} + \frac{9}{17} =\\)
(15) \\(\frac{2}{19} + \frac{8}{19} =\\)
(16) \\(\frac{10}{21} + \frac{13}{21} =\\)
(17) \\(\frac{11}{23} + \frac{14}{23} =\\)

Explanation:

Step1: Add numerators, keep denominator

$\frac{6}{7}+\frac{3}{7}=\frac{6+3}{7}=\frac{9}{7}$

Step2: Add numerators, keep denominator

$\frac{4}{9}+\frac{7}{9}=\frac{4+7}{9}=\frac{11}{9}$

Step3: Add numerators, keep denominator

$\frac{5}{11}+\frac{6}{11}=\frac{5+6}{11}=\frac{11}{11}=1$

Step4: Add numerators, keep denominator

$\frac{8}{13}+\frac{7}{13}=\frac{8+7}{13}=\frac{15}{13}$

Step5: Add numerators, keep denominator

$\frac{8}{15}+\frac{8}{15}=\frac{8+8}{15}=\frac{16}{15}$

Step6: Add numerators, keep denominator

$\frac{11}{17}+\frac{9}{17}=\frac{11+9}{17}=\frac{20}{17}$

Step7: Add numerators, keep denominator

$\frac{2}{19}+\frac{8}{19}=\frac{2+8}{19}=\frac{10}{19}$

Step8: Add numerators, keep denominator

$\frac{10}{21}+\frac{13}{21}=\frac{10+13}{21}=\frac{23}{21}$

Step9: Add numerators, keep denominator

$\frac{11}{23}+\frac{14}{23}=\frac{11+14}{23}=\frac{25}{23}$

Answer:

(9) $\frac{9}{7}$
(10) $\frac{11}{9}$
(11) $1$
(12) $\frac{15}{13}$
(13) $\frac{16}{15}$
(14) $\frac{20}{17}$
(15) $\frac{10}{19}$
(16) $\frac{23}{21}$
(17) $\frac{25}{23}$