Question

if a/b=5/3 then find the value of 7a+9/7a-9b​

Answer 1

Step-by-step explanation:

$\pink{given = \frac{a}{b} = \frac{5}{3} } \\ \bold \red {to \: find = 7a + \frac{9}{7a} - 9b} \\ = \frac{a}{b} = \frac{5}{3} \\ = a = 5..b = 3.. \\ \purple{then = 7a+ \frac{9}{7a} - 9b} \\ = 7(5) + \frac{9}{7(5)} - 9(3) \\ = 35 + \frac{9}{35} - 27 \\ = \green{by \: taking \: lcm = \frac{35}{1} + \frac{9}{35} - \frac{27}{1} } \\ = 1225 + 9 - 945 \\ = 289...</p><p></p><p> \huge\color{red}{ \colorbox{purple}{\colorbox{white} {Thus:-289..is the correct answer..}}}$

Thus:-289..is the correct answer