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Solve the Following Systems of Equations: `"Xy"/(X + Y) = 6/5` `"Xy"/(Y- X) = 6` - CBSE Class 10 - Mathematics

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Question

Solve the following systems of equations:

`"xy"/(x + y) = 6/5`

`"xy"/(y- x) = 6`

Solution

The given system of equation is

`"xy"/(x + y) = 6/5`

=> 5xy = 6(x + y)

=> 5xy = 6x + 6y ....(i)

And `(xy)/(y - x) = 6`

=> xy = 6(y -x)

=> xy= 6y - 6x ....(ii)

Adding equation (i) and equation (ii), we get

 6xy = 6y + 6y

=> 6xy = 12y

`=> x = (12y)/(6y) = 2`

Putting x = 2 in equation (i), we get

`5 xx 1 xx y = 6 xx 2 + 6y`

=> 10y =  12 + 6y

=> 10y - 6y = 12

=> 4y = 12

`=> y = 12/4 = 3`

Hence, solution of the given system of equation is x = 2, y =3

  Is there an error in this question or solution?

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Solution Solve the Following Systems of Equations: `"Xy"/(X + Y) = 6/5` `"Xy"/(Y- X) = 6` Concept: Algebraic Methods of Solving a Pair of Linear Equations - Substitution Method.
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