Question

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

$8.) \frac{1}{7x} + \frac{1}{6y} = 3$

;

$\frac{1}{2x} - \frac{1}{3y} = 5$


Ans: 1 / 14 , 1 / 6 ; 13 / 42


Class 10


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Answer 1

Given : 2x + y

$= > 2(\frac{1}{14}) + \frac{1}{6}$

$= > \frac{1}{7} + \frac{1}{6}$

$= > \frac{1 * 6 + 1 * 7}{7 * 6}$

$= > \frac{6 + 7}{42}$

$= \boxed {\frac{13}{42}}$

Hope it helps!