Question

Slove the pair of liner equation 4x+y=14and 2x-y=4

Answer 1

Answer:

Step-by-step explanation:

Let 4x + y = 14------eq ( 1 ) and

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

Now adding eq ( 1 ) + eq ( 2 ) , we get

4x + y + 2x - y = 14 + 4

6x = 18

x = 18 / 6 ( ∵ transposing )

x = 3.

Now substituting " x = 3 " in eq ( 1 ) , we have

4× ( 3 ) + y = 14

12 + y = 14

y = 14 - 12 (∵ transposing )

y = 2.

∴The values of x and y are 3 and 2.

Answer 2

Step-by-step explanation:

Step-by-step explanation:

Let 4x + y = 14------eq (1) and

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

Now adding eq (1) + eq (2), we get

4x + y + 2x - y = 14 +4

6x = 18

x = 18/6 ( transposing)

x = 3.

Now substituting "x = 3 " in eq (1), we have

4x (3) + y = 14

12 + y = 14

y=14-12 (transposing)

y = 2.

..The values of x and y are 3 and 2.