Question

Solve by 'Elimination by Substitution' method and find the value of 2x + y

$6.) \: \frac{1}{2x} - \frac{1}{y} = - 1$
;

$\frac{1}{x} + \frac{1}{2y} = 8$

Ans: 1 / 6, 1 / 4 ; 7 / 12

Class 10

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Answer 1

Given : (2x + y)

$= > 2 * \frac{1}{6} + \frac{1}{4}$

$= > \frac{1}{3} + \frac{1}{4}$

$= > \frac{1 * 4 + 1 * 3}{12}$

$= \boxed {\frac{7}{12} }$

Hope it helps!