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6x + 7y - 9z =
6*3+7*(-2)-9*(-5) =
18-14+45 =
49
b) x= 0,1 y= z = 0
6x + 7y - 9z =
6*0,1+7* brak niewiadomej y
a) x = 3 y = -2 z= -5 b) x= 0,1 y= z = 0
a)6*3 + 7*(-2) - 9*(-5)= 18-14+45= 49
b)6*0,1+7*0-9*0=0,6
b) 6* 0,1 + 7* 0 + 9*0= 0,6 + 0 = 0,6