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x/3 - y/2 = 2⅓ / *(-9)
2 i 6 sie skróci, zostanie:
3x + 2y = 8
-3x + 4,5y = -21
3x i -3x sie skrócą:
6,5y = -13 / :6,5
y = -2
3x + 2 * (-2)=8
3x + (-4)=8
3x=8+4
3x=12 /:3
x=4