January 2019 1 21 Report
Rozwiąż układy równań:
1.{ x+y=3
{x-y=5

2. {4x-6y=2
{-4x-y=-9

3. {x+y=-7
{x-y=-5

4. {-x+2y=10
{x-3y=-13

5. {4y-6x=8
{-4y+x=2

6. {x+2y=-1
{-x+3y=6

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