Whakaoti i te {l}{180=2y+x}{90=2a+y}{180=2x+a}

$$\left. \begin{array} { l } { 180 = 2 y + x } \\ { 90 = 2 a + y } \\ { 180 = 2 x + a } \end{array} \right.$$

Whakaoti mō y, x, a

$$x=80$$

$$y=50$$

$$a=20$$

Ngā Hipanga Poto E Whakamahi Whakakapinga Ana

Me whakaoti te 180=2y+x mō x.

$$x=180-2y$$

Whakakapia te 180-2y mō te x i te whārite 180=2x+a.

$$180=2\left(180-2y\right)+a$$

Me whakaoti te whārite tuarua mō y me te whārite tuatoru mō a.

$$y=90-2a a=-180+4y$$

Whakakapia te 90-2a mō te y i te whārite a=-180+4y.

$$a=-180+4\left(90-2a\right)$$

Me whakaoti te a=-180+4\left(90-2a\right) mō a.

$$a=20$$

Whakakapia te 20 mō te a i te whārite y=90-2a.

$$y=90-2\times 20$$

Tātaitia te y i te y=90-2\times 20.

$$y=50$$

Whakakapia te 50 mō te y i te whārite x=180-2y.

$$x=180-2\times 50$$

Tātaitia te x i te x=180-2\times 50.

$$x=80$$

Kua oti te pūnaha te whakatau.

$$y=50 x=80 a=20$$