Here’s what I got:

y=0

y=1

y= -4

y= 21/4 = 5.25

y=108/5 = 21.6

Q2 2xy+1=xy+3; x=2

Q3 1/2x-y=3/2x-3; x=7

Q4 3/4x+4/7y=5/4x-1; x=8

Q5 3/5y4x=3-2y; x=9

A1

3(2)-6y=6

6-6y=6

-6y=0

y=0

A2

2(2)y+1=(2)y+3

4y+1=2y+3

4y-2y=3-1

2y=2

y=1

The rest you can solve too i have just revised you the way in which you can solve it…….

3(2)-6y=6

6-6y=6

6y=0

y=0

2xy+1=xy+3; x=2

2(2)y+1=2(y)+3

4y+1=2y+3

4y-2y=3-1

2y=2

y=1

The fraction ones I think I did wrong, so I didn’t put those ones up…

3(2)-6y=6

6-6y=6

-6y=0

y=0

2xy+1=xy+3

2(2)y+1=(2)y+3

4y+1=2y+3

2y=2

y=1

All I had time to do. Gotta go!

3(2)-6y=6

6-6y=6

6y=0

y=0

2xy+1=xy+3;x=2

2(2)y+1=2y+3

4y+1=2y+3

2y=2

y=1

1/2x-y=3/2x-3;x=7

1/2(7)-y=3/2(7)-3

7/2-y=21/2-3

7/2-y=21/2-6/2

7/2-y=15/2

-y=15/2-7/2

-y=8/2

-y=4

y=-4

3/4x+4/7y=5/4x-1;x=8

3/4(8)+4/7y=5/4(8)-1

27/4+4/7y=40/4-1

27/4+4/7y=10-1

27/4+4/7y=9

4/7y=9-(27/4)

4/7y=36/4-27/4

4/7y=9/4

y=9/4(7/4)

y=63/16

y=3(15/16)

3/5y4x=3-2y;x=9

3/5y4(9)=3-2y

3/5y36=3-2y

108/5y=3-2y

21(3/5)y=3-2y

19(3/5)y=3

57/5y=3

y=3(5/57)

y=15/57