\left\{ \begin{array} { l } { x = 9 } \\ { 2 x + 3 y = 21 } \end{array} \right.
Whakaoti mō x, y
x=9
y=1
Graph
Tohaina
Kua tāruatia ki te papatopenga
2\times 9+3y=21
Whakaarohia te whārite tuarua. Me kōkuhu ngā uara tāupe mōhiotia ki te whārite.
18+3y=21
Whakareatia te 2 ki te 9, ka 18.
3y=21-18
Tangohia te 18 mai i ngā taha e rua.
3y=3
Tangohia te 18 i te 21, ka 3.
y=\frac{3}{3}
Whakawehea ngā taha e rua ki te 3.
y=1
Whakawehea te 3 ki te 3, kia riro ko 1.
x=9 y=1
Kua oti te pūnaha te whakatau.
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