Question

solve x and y 3x + y= 8 and 2x- y= 2
​

Answer 1

Answer:

x = 2

y = 2

Step-by-step explanation:

3x + y = 8 ----- ( 1 )

2x - y = 2 ----- ( 2 )

Solving x and y by -

Elimination Method :

3x + y = 8

2x - y = 2

--------------

5x = 10

--------------

x = 10 / 5

x = 2

Substitute x value in the equation ( 1 ) :

3x + y = 8

3 ( 2 ) + y = 8

6 + y = 8

y = 8 - 6

y = 2

Proof :

Substitute both x and y values in

Equation ( 2 ) to -

Verify whether x,y values are right .

2x - y = 2

2 ( 2 ) - 2

4 - 2 = 2

Answer 2

Answer:

x=2,y=2

Step-by-step explanation:

3x+y=8       (let it be eqn 1)

 2x-y=2                   (eqn 2)

by adding 1 & 2 we get,

3x+y+2x-y=10

5x=10

x=2

if x=2 then,

putting the value of x in eqn 2 we get,

2(2)-y=2

4-y=2

y=4-2

y=2

hence,

x=2,y=2