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Proszę o dokończenie rozwiązywania tego układu równań

{ (2x-y)/4 + (3x+5)/2=3

{ (x-7)/5 - (2y+x)/10=-1

{ (2x-y)/4 + (3x+5)/2=3 / *4

{ (x-7)/5 - (2y+x)/10=-1 /*10

{ 4(2x-y)/4 + 4(3x+5)/2=12

{ 10(x-7)/5 - 10(2y+x)/10=-10


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