\left\{ \begin{array} { l } { x + y + z = 11 } \\ { x - y + 3 z = 13 } \\ { 2 x + 2 y - z = 7 } \end{array} \right.
Whakaoti mō x, y, z
x=2
y=4
z=5
Tohaina
Kua tāruatia ki te papatopenga
x=-y-z+11
Me whakaoti te x+y+z=11 mō x.
-y-z+11-y+3z=13 2\left(-y-z+11\right)+2y-z=7
Whakakapia te -y-z+11 mō te x i te whārite tuarua me te tuatoru.
y=-1+z z=5
Me whakaoti ēnei whārite mō y me z takitahi.
y=-1+5
Whakakapia te 5 mō te z i te whārite y=-1+z.
y=4
Tātaitia te y i te y=-1+5.
x=-4-5+11
Whakakapia te 4 mō te y me te 5 mō z i te whārite x=-y-z+11.
x=2
Tātaitia te x i te x=-4-5+11.
x=2 y=4 z=5
Kua oti te pūnaha te whakatau.
Ngā Tauira
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