Question

Add the following rational numbers i) 3by7and-5by7 ii) -8by11and-5by11 iii)-7by13and6by14​

Answer 1

${\huge{\boxed{\underline{\textbf{\textsf{\color{navy}{An}{\pink{sw}{\purple{er:}}}}}}}}}$

$i) \: \frac{3}{7} \: + \: \frac{ - 5}{7} = { \pink{ \frac{ - 2}{7}}} \\ \\ ii) \: \frac{ - 8}{11} \: + \: \frac{ - 5}{11} = { \pink{ \frac{ - 13}{11} }} \\ \\ iii) \: \frac{ - 7}{13} \: + \: \frac{6}{14} \\ \\ \frac{ - 98 \: + \: 78 \: }{182} = \frac{{ \cancel{ - 20}}}{{ \cancel{182}}} \\ \\ = { \pink{\frac{ - 10}{91}}}$

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