Question

Solve 2x + y = 11,x + y = 8, find x and y values? ​

Answer 1

Answer:

Step-by-step explanation:

Let 2x + y = 11 -------eq ( 1 ) and

x +y = 8 ----------eq ( 2 )

Subtracting eq ( 1 ) - eq ( 2 ), we get

2x + y - ( x + y ) = 11 - 8

⇒ 2x + y - x - y = 3

⇒ x = 3

Now substituting x = 3 in the eq ( 1 ),we get

2 ( 3 ) + y = 11

6 + y = 11

y = 11 - 6 = 5

∴ x = 3 and y = 5 is the answer.

Answer 2

Given: The equations are$2x + y = 11\ and\ x + y = 8$.

We have to find the value of$x\ and\ y$.

We are solving in the following way:

We have,

The equations are$2x + y = 11\ and\ x + y = 8$.

Let assume;

$2x + y = 11\ \ ...1)\\ x + y = 8\ \ ...2)$

Subtracting Eq. 2) from Eq.1) we get,

$=>2x-x+y-y=11-8\\=>x=3$

Putting this value of $x$in the eq. 2) we get,

$=>x+y=8\\=>3+y=8\\=>y=8-3\\=>y=5$

Hence, the value of $x\ is\ 3$and the value of$y\ is\ 5$.