Solve the following pair of equations by reducing them to a pair of linear equations:
$\frac{1}{2x} + \frac{1}{3y} = 2$
$\frac{1}{3x} + \frac{1}{2y} = \frac{13}{6}$

Vedclass pdf generator app on play store
Vedclass iOS app on app store
(X=1/2, Y=1/3) Given equations:
$\frac{1}{2x} + \frac{1}{3y} = 2$ ...$(1)$
$\frac{1}{3x} + \frac{1}{2y} = \frac{13}{6}$ ...$(2)$
Let $\frac{1}{x} = p$ and $\frac{1}{y} = q$. Substituting these into the equations:
$\frac{p}{2} + \frac{q}{3} = 2 \Rightarrow 3p + 2q = 12$ ...$(3)$
$\frac{p}{3} + \frac{q}{2} = \frac{13}{6} \Rightarrow 2p + 3q = 13$ ...$(4)$
Multiply equation $(3)$ by $3$ and equation $(4)$ by $2$:
$9p + 6q = 36$ ...$(5)$
$4p + 6q = 26$ ...$(6)$
Subtracting $(6)$ from $(5)$:
$(9p - 4p) + (6q - 6q) = 36 - 26$
$5p = 10 \Rightarrow p = 2$
Substitute $p = 2$ in equation $(3)$:
$3(2) + 2q = 12$
$6 + 2q = 12 \Rightarrow 2q = 6 \Rightarrow q = 3$
Since $p = \frac{1}{x} = 2$,we get $x = \frac{1}{2}$.
Since $q = \frac{1}{y} = 3$,we get $y = \frac{1}{3}$.

Explore More

Similar Questions

Solve the following pair of equations by substitution method:
$7x - 15y = 2$ $...(1)$
$x + 2y = 3$ $...(2)$

Two rails are represented by the equations $x + 2y - 4 = 0$ and $2x + 4y - 12 = 0$. Will the rails cross each other?

Difficult
View Solution

Solve the following pair of linear equations by the substitution method:
$\frac{3x}{2} - \frac{5y}{3} = -2$
$\frac{x}{3} + \frac{y}{2} = \frac{13}{6}$

In a $\Delta ABC$,$\angle C = 3 \angle B = 2(\angle A + \angle B)$. Find the three angles.

Difficult
View Solution

On comparing the ratios $\frac{a_{1}}{a_{2}}, \frac{b_{1}}{b_{2}}$ and $\frac{c_{1}}{c_{2}},$ find out whether the following pair of linear equations are consistent or inconsistent.
$3x + 2y = 5; \quad 2x - 3y = 7$

Vedclass Products

For Students

Vedclass Test Series

Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.

Start Free Trial
For Teachers

Exam Paper Generator

Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.

Try Free
For Institutes

Online Exam Module

Live online exams with unlimited students, 360° analytics & white-label branding.

See Demo