Whakaoti mō x
x=\frac{13-y}{2}
Whakaoti mō y
y=13-2x
Graph
Tohaina
Kua tāruatia ki te papatopenga
15=3\times 1+2x-1+y
Tātaihia te -1 mā te pū o 2, kia riro ko 1.
15=3+2x-1+y
Whakareatia te 3 ki te 1, ka 3.
15=2+2x+y
Tangohia te 1 i te 3, ka 2.
2+2x+y=15
Whakawhitihia ngā taha kia puta ki te taha mauī ngā kīanga tau taurangi katoa.
2x+y=15-2
Tangohia te 2 mai i ngā taha e rua.
2x+y=13
Tangohia te 2 i te 15, ka 13.
2x=13-y
Tangohia te y mai i ngā taha e rua.
\frac{2x}{2}=\frac{13-y}{2}
Whakawehea ngā taha e rua ki te 2.
x=\frac{13-y}{2}
Mā te whakawehe ki te 2 ka wetekia te whakareanga ki te 2.
15=3\times 1+2x-1+y
Tātaihia te -1 mā te pū o 2, kia riro ko 1.
15=3+2x-1+y
Whakareatia te 3 ki te 1, ka 3.
15=2+2x+y
Tangohia te 1 i te 3, ka 2.
2+2x+y=15
Whakawhitihia ngā taha kia puta ki te taha mauī ngā kīanga tau taurangi katoa.
2x+y=15-2
Tangohia te 2 mai i ngā taha e rua.
2x+y=13
Tangohia te 2 i te 15, ka 13.
y=13-2x
Tangohia te 2x mai i ngā taha e rua.
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