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Koje je rješenje jednadžbe x−[3x−(5+x)]−8=3(x+2)−1x-\left[3x-\left(5+x\right)\right]-8=3\left(x+2\right)-1x−[3x−(5+x)]−8=3(x+2)−1 ?
x=−3x=-3x=−3
x=−2x=-2x=−2
x=−43x=-\frac{4}{3}x=−34
Koja su rješenja jednadžbe ∣3x−4∣=2\left|3x-4\right|=2∣3x−4∣=2 ?
x1=2, x2=−2x_1=2,\ x_2=-2x1=2, x2=−2
x1=−2, x2=−23x_1=-2,\ x_2=-\frac{2}{3}x1=−2, x2=−32
x1=2, x2=23x_1=2,\ x_2=\frac{2}{3}x1=2, x2=32
Odredi x+yx+yx+y u sustavu 2x+3y=5, 4x+5y=12x+3y=5,\ 4x+5y=12x+3y=5, 4x+5y=1 gdje su x i y rješenja sustava.
x+y=−2x+y=-2x+y=−2
x+y=2x+y=2x+y=2
x+y=5x+y=5x+y=5
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