Class 10MathematicsPair of Linear Equations in Two VariablesMix Examples - Pair of Linear Equations in Two Variables
EasyIn a two-digit number,the digit at unit's place is $x$ and the digit at ten's place is $y$. Then the number is $\ldots \ldots \ldots \ldots .$
- A$10x + y$
- B$x + y$
- C$10(x + y)$
- D$10y + x$
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Similar Questions
Do the following equations represent a pair of coincident lines? Justify your answer.
$\frac{x}{2} + y + \frac{2}{5} = 0$
$4x + 8y + \frac{5}{16} = 0$
$\frac{x}{2} + y + \frac{2}{5} = 0$
$4x + 8y + \frac{5}{16} = 0$
Medium
View SolutionFor the pair of equations $\frac{2}{x} + \frac{3}{y} = 3$ and $\frac{3}{x} + \frac{2}{y} = 7$,find the value of $\frac{3}{x} + \frac{3}{y}$.
Medium
View SolutionFor a pair of equations,if $a_{1} b_{2}-a_{2} b_{1}=0, b_{1} c_{2}-b_{2} c_{1}=0$ and $c_{1} a_{2}-c_{2} a_{1}=0$,then the solution set of the pair of equations is ...........
Medium
View SolutionSolve the following pair of linear equations using a graph: $3x + 6y = 3900, x + 3y = 1300$
Medium
View SolutionThe solution set of a pair of equations $x+y-1=0$ and $2x+2y-2=0$ is $\ldots \ldots \ldots \ldots$
Medium
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