Class 10MathematicsPair of Linear Equations in Two VariablesMix Examples - Pair of Linear Equations in Two Variables
MediumFor a pair of equations $13x - 7y = 19$ and $7x - 13y = 31$,find the value of $x + y$.
- A$2$
- B$-2$
- C$5$
- D$40$
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One equation of a pair of dependent linear equations is $-5x + 7y = 2$. The second equation can be
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View SolutionSolve the following pair of equations by the cross-multiplication method:
$\frac{x}{a} + \frac{y}{b} = a + b$
$\frac{x}{a^2} + \frac{y}{b^2} = 2$
$\frac{x}{a} + \frac{y}{b} = a + b$
$\frac{x}{a^2} + \frac{y}{b^2} = 2$
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View SolutionThe ratio of the present ages of Rajan and Jay is $3:2$. After five years,the ratio of their ages will be $4:3$. Find the present ages of both.
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