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

Form the pair of linear equations for the following problem,and find their solutions (if they exist) by the elimination method:
$A$ lending library has a fixed charge for the first three days and an additional charge for each day thereafter. Saritha paid ₹ $27$ for a book kept for seven days,while Susy paid ₹ $21$ for the book she kept for five days. Find the fixed charge and the charge for each extra day.

Solve the following pair of linear equations by the elimination method and the substitution method:
$\frac{x}{2} + \frac{2y}{3} = -1$ and $x - \frac{y}{3} = 3$

On comparing the ratios $\frac{a_{1}}{a_{2}}, \frac{b_{1}}{b_{2}}$ and $\frac{c_{1}}{c_{2}},$ find out whether the lines representing the following pairs of linear equations intersect at a point,are parallel,or are coincident:
$9x + 3y + 12 = 0$
$18x + 6y + 24 = 0$

Places $A$ and $B$ are $100 \ km$ apart on a highway. One car starts from $A$ and another from $B$ at the same time. If the cars travel in the same direction at different speeds,they meet in $5 \ hours$. If they travel towards each other,they meet in $1 \ hour$. What are the speeds of the two cars?

Which of the following pairs of linear equations has a unique solution,no solution,or infinitely many solutions? In case there is a unique solution,find it by using the cross-multiplication method.
$x - 3y - 7 = 0$
$3x - 3y - 15 = 0$

Difficult
View Solution

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