Whakaoti i te {l}{S=1/2*6*y}{y=3/4x+6}

$$\left. \begin{array} { l } { S = \frac { 1 } { 2 } \times 6 \times y } \\ { y = \frac { 3 } { 4 } x + 6 } \end{array} \right.$$

Whakaoti mō x, y

$$x=\frac{4\left(S-18\right)}{9}$$

$$y=\frac{S}{3}$$

Ngā Upane e Whakamahi ana i te Whakakapinga

Whakaarohia te whārite tuatahi. Whakareatia te \frac{1}{2} ki te 6, ka 3.

$$S=3y$$

Whakawhitihia ngā taha kia puta ki te taha mauī ngā kīanga tau taurangi katoa.

$$3y=S$$

Whakaarohia te whārite tuarua. Tangohia te \frac{3}{4}x mai i ngā taha e rua.

$$y-\frac{3}{4}x=6$$

Hei whakaoti i ētahi whārite takirua mā te whakakapinga, me whakaoti tētahi whārite i te tuatahi mō tētahi o ngā taurangi. Ka whakakapi i te otinga mō taua taurangi ki tērā o ngā whārite.

$$3y=S,y-\frac{3}{4}x=6$$

Tīpakohia tētahi o ngā whārite e rua he māmā ake ki te whakaoti mō te y mā te wehe i te y i te taha mauī o te tohu ōrite.

$$3y=S$$

Whakawehea ngā taha e rua ki te 3.

$$y=\frac{S}{3}$$

Whakakapia te \frac{S}{3} mō te y ki tērā atu whārite, y-\frac{3}{4}x=6.

$$\frac{S}{3}-\frac{3}{4}x=6$$

Me tango \frac{S}{3} mai i ngā taha e rua o te whārite.

$$-\frac{3}{4}x=-\frac{S}{3}+6$$

Whakawehea ngā taha e rua o te whārite ki te -\frac{3}{4}, he ōrite ki te whakarea i ngā taha e rua ki te tau huripoki o te hautanga.

$$x=\frac{4S}{9}-8$$

Kua oti te pūnaha te whakatau.

$$y=\frac{S}{3},x=\frac{4S}{9}-8$$