Whakaoti mō x, z, y
x=-1
y=3
z=3
Tohaina
Kua tāruatia ki te papatopenga
x=z-4
Me whakaoti te x-z=-4 mō x.
2\left(z-4\right)+5y=13
Whakakapia te z-4 mō te x i te whārite 2x+5y=13.
z=4y-9 y=-\frac{2}{5}z+\frac{21}{5}
Me whakaoti te whārite tuarua mō z me te whārite tuatoru mō y.
y=-\frac{2}{5}\left(4y-9\right)+\frac{21}{5}
Whakakapia te 4y-9 mō te z i te whārite y=-\frac{2}{5}z+\frac{21}{5}.
y=3
Me whakaoti te y=-\frac{2}{5}\left(4y-9\right)+\frac{21}{5} mō y.
z=4\times 3-9
Whakakapia te 3 mō te y i te whārite z=4y-9.
z=3
Tātaitia te z i te z=4\times 3-9.
x=3-4
Whakakapia te 3 mō te z i te whārite x=z-4.
x=-1
Tātaitia te x i te x=3-4.
x=-1 z=3 y=3
Kua oti te pūnaha te whakatau.
Ngā Tauira
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{ x } ^ { 2 } - 4 x - 5 = 0
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whārite Simultaneous
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Whakarerekētanga
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Whakaurunga
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