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Whakaoti mō x, y, z
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Tohaina

-2+5x-y=5z+20 -4+2y-z=2x-12 7+3z-x=3y-15
Me whakarea ia whārite mā te taurea pātahi iti rawa o ngā tauraro kei roto. Whakarūnātia.
y=-22+5x-5z
Me whakaoti te -2+5x-y=5z+20 mō y.
-4+2\left(-22+5x-5z\right)-z=2x-12 7+3z-x=3\left(-22+5x-5z\right)-15
Whakakapia te -22+5x-5z mō te y i te whārite tuarua me te tuatoru.
x=\frac{9}{2}+\frac{11}{8}z z=-\frac{44}{9}+\frac{8}{9}x
Me whakaoti ēnei whārite mō x me z takitahi.
z=-\frac{44}{9}+\frac{8}{9}\left(\frac{9}{2}+\frac{11}{8}z\right)
Whakakapia te \frac{9}{2}+\frac{11}{8}z mō te x i te whārite z=-\frac{44}{9}+\frac{8}{9}x.
z=4
Me whakaoti te z=-\frac{44}{9}+\frac{8}{9}\left(\frac{9}{2}+\frac{11}{8}z\right) mō z.
x=\frac{9}{2}+\frac{11}{8}\times 4
Whakakapia te 4 mō te z i te whārite x=\frac{9}{2}+\frac{11}{8}z.
x=10
Tātaitia te x i te x=\frac{9}{2}+\frac{11}{8}\times 4.
y=-22+5\times 10-5\times 4
Whakakapia te 10 mō te x me te 4 mō z i te whārite y=-22+5x-5z.
y=8
Tātaitia te y i te y=-22+5\times 10-5\times 4.
x=10 y=8 z=4
Kua oti te pūnaha te whakatau.