January 2019 1 17 Report
Oblicz metodą przeciwnych współczynników:
a) 0,6x + 0,1y = 1
0,3x - 0,2y = - 0,5
Oblicz dowolną metodą:
a) 2 (x - 3y + 2) - (2x + y - 6) = 3
3 (x + y - 3) + (4x - 2y + 2) = 15
Oblicz metodą podstawiania:
a) 3 (x + 1) - ( 8 - 3) = 7
2 ( x - 1) + ( y + 2) = 4

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