Question

Solve : x-2y =7

2 x-6y=0 ​

Answer 1

Answer:

this is your answer

thanks

Answer 2

( y , x ) = ( 7 , 21 )

Step-by-step explanation:

x - 2y = 7 .....( 1 )

2x - 6y = 0 .....( 2 )

Multiply equation 1 with 2

We get

2x - 4y = 14 .....( 3 )

Now

Subtract equation 2 from equation 3

2x - 4y = 14 .....( 3 )

2x - 6y = 0 .....( 2 )

- + -

2y = 14

Subtracting equation 2 from equation 3

We get

2y = 14

y = 14 / 2

y = 7

y = 7

Putting the value of y in equation 2

We get

2x - 6y = 0

2x - 6 ( 7 ) = 0

2x - 42 = 0

2x = 0 + 42

2x = 42

x = 42 / 2

x = 21

x = 21

( y , x ) = ( 7 , 21 )

___________________________

Let's check the value of y = 7 and x = 21 by taking it in equation 2

2x - 6y = 0

2 ( 21 ) - 6 ( 7 ) = 0

42 - 42 = 0

0 = 0

( y , x ) = ( 7 , 21 )