Question

find the solution of the following pair of linear equations x-y=3 and 4x+2y=0​

Answer 1

Answer:

x-y=3_____(1)×4

4x+2y=0______(2)

4x-4y=12

4x+2y=0

__________

-6y=12

y=-2

from equation (1)

x-(-2)=3

x=-1

Answer 2

Answer:

$x = 1$, $y = -2$

Step-by-step explanation:

$x - y = 3$

∴ $x = y + 3$ . . . . . . . . . . . . . . . .  (i)

$4x + 2y = 0$

$=> 2x + y = 0$  [dividing both sides by 2]

$=> 2(y + 3) + y = 0$  [using equation (i)]

$=> 3y = -6$

∴ $y = -2$

∴ $x = 1$