September 2018 2 8 Report

1.

{y=x-6

{2x-2y=12

2.

{x-2y=-5

{-2x=4y=6

3.

{5y-3x=4

{2y-x=6

4.

{y=x+3

{x-2y=-7

5.

{-x+2y=-5

{2x-4y=10

6.

{5x-y=2

{2y=10-6

7.

{2x-8y=6

{7(3+4y)=7x

8.

{3x+2y+2=4(x+1)

{2(x-3)-3y=-9

9.

{x+y=0

{-3x-2y+5

10.

{5x+y=56

{4x+y=46

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