Question

3x-y=2andx+2y=3 solve by elimination method​

Answer 1

Answer:

multiply the second equation with 3

it will be 3x+6y=9

then by elimination

3x-y=2

3x+6y=9

-. -. -

-7y=-7

y=-7/-7

y=1 and

put y value in 1st equation and x=1

Answer 2

3x-y=2. eq.1

x+2y=3. eq.2

Multiply eq. 2 by 3;we get

3x+2y=3. eq 3

Now, subtract eq. 1 by eq. 3;

3x-y=2

3x+6y=9

=-7y=-7

then,y=-7/-7=1

y=1

putting value of y in eq.2; we get

x+2(1)=3

x+2=3

x=3-2

x=1

Therefore,x=1 and y=1.