Question:
Solve the following systems of equations:
$\frac{1}{7 x}+\frac{1}{6 y}=3$
$\frac{1}{2 x}-\frac{1}{3 y}=5$
Solution:
The given equations are:
$\frac{1}{7 x}+\frac{1}{6 y}=3$$\cdots(i)$
$\frac{1}{2 x}-\frac{1}{3 y}=5$...(ii)
Multiply equation (ii) by $\frac{1}{2}$ and add both equations we get
$\frac{1}{7 x}+\frac{1}{6 y}=3$
Put the value of $x$ in equation $(i)$, we get
$\frac{1}{7 \times \frac{1}{14}}+\frac{1}{6 y}=3$
$\Rightarrow \frac{1}{6 y}=1$
$\Rightarrow y=\frac{1}{6}$
Hence the value of $x=\frac{1}{14}$ and $y=\frac{1}{6}$