Question

find the value of x and y? x-2y=4 and 2x+y=3​

Answer 1

Answer:

x = 2 and y = -1

Step-by-step explanation:

Given a pair of linear equations such that,

x - 2y = 4 ......(1)

2x + y = 3 .......(2)

To find the values of x and y,

Solving eqn(1), we get,

=> x = 4 + 2y

Now, substitute this value in eqn (2).

Therefore, we will get,

=> 2(4 +2y) + y = 3

=> 8 + 4y + y = 3

=> 5y + 8 = 3

=> 5y = 3 - 8

=> 5y = -5

=> y = -5/5

=> y = -1

Therefore, we will get,

=> x = 4 + 2(-1)

=> x = 4 - 2

=> x = 2

Hence, the required values of x = 2 and y = -1.

Answer 2

Answer:

HEY MATE HERE IS YOUR ANSWER :

x = 2 & y = -1

Step-by-step explanation:

Lets solve by using substitution method,

x - 2y = 4 ---(1)

2x + y = 3 ---(2)

take equation 1,

x = 4 + 2y ---(3)

put the value of 'x' in equation (2)

:. 2(4 + 2y) + y = 3

:. 8 + 4y + y = 3

:. 5y = 3 – 8

:. 5y = –5

:. y = –1

put the value of 'y' in equation (3)

:. x = 4 + 2(–1)

:. x = 4 + (–2)

:. x = 4 – 2

:. x = 2

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