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Solve for x and y: 4x – 3y = 8, 6x – y = 29/3

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Question

Solve for x and y:

`4x - 3y = 8, 6x - y = 29/3`

Sum
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Solution

The given system of equation is:

4x – 3y = 8   ...(i)

`6x - y = 29/3`   ...(ii)

On multiplying (ii) by 3, we get:

18x – 3y = 29   ...(iii)

On subtracting (iii) from (i) we get:

–14x = –21 

`x = 21/14`

`x = 3/2`

Now, substituting the value of `x = 3/2` in (i), we get:

`4 xx 3/2 - 3y = 8`

⇒ 6 – 3y = 8

⇒ 3y = 6 – 8

⇒ 3y = –2

⇒ `y = (-2)/3`

Hence, the solution `x = 3/2` and `y = (-2)/3`.

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Chapter 3: Linear Equations in Two Variables - EXERCISE 3B [Page 110]

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R.S. Aggarwal Mathematics [English] Class 10
Chapter 3 Linear Equations in Two Variables
EXERCISE 3B | Q 9. | Page 110
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