\left\{ \begin{array} { l } { a + 2 b + c = 1 } \\ { 2 a - b = 3 } \\ { a + 2 c = + 5 } \end{array} \right.
Whakaoti mō a, b, c
a=1
b=-1
c=2
Tohaina
Kua tāruatia ki te papatopenga
a=-2b-c+1
Me whakaoti te a+2b+c=1 mō a.
2\left(-2b-c+1\right)-b=3 -2b-c+1+2c=5
Whakakapia te -2b-c+1 mō te a i te whārite tuarua me te tuatoru.
b=-\frac{2}{5}c-\frac{1}{5} c=4+2b
Me whakaoti ēnei whārite mō b me c takitahi.
c=4+2\left(-\frac{2}{5}c-\frac{1}{5}\right)
Whakakapia te -\frac{2}{5}c-\frac{1}{5} mō te b i te whārite c=4+2b.
c=2
Me whakaoti te c=4+2\left(-\frac{2}{5}c-\frac{1}{5}\right) mō c.
b=-\frac{2}{5}\times 2-\frac{1}{5}
Whakakapia te 2 mō te c i te whārite b=-\frac{2}{5}c-\frac{1}{5}.
b=-1
Tātaitia te b i te b=-\frac{2}{5}\times 2-\frac{1}{5}.
a=-2\left(-1\right)-2+1
Whakakapia te -1 mō te b me te 2 mō c i te whārite a=-2b-c+1.
a=1
Tātaitia te a i te a=-2\left(-1\right)-2+1.
a=1 b=-1 c=2
Kua oti te pūnaha te whakatau.
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