\{ 30 ( 3 x + 2 y ) = 405
Whakaoti mō x
x=-\frac{2y}{3}+\frac{9}{2}
Graph
Tohaina
Kua tāruatia ki te papatopenga
3x+2y=\frac{405}{30}
Whakawehea ngā taha e rua ki te 30.
3x+2y=\frac{27}{2}
Whakahekea te hautanga \frac{405}{30} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 15.
3x=\frac{27}{2}-2y
Tangohia te 2y mai i ngā taha e rua.
\frac{3x}{3}=\frac{\frac{27}{2}-2y}{3}
Whakawehea ngā taha e rua ki te 3.
x=\frac{\frac{27}{2}-2y}{3}
Mā te whakawehe ki te 3 ka wetekia te whakareanga ki te 3.
x=-\frac{2y}{3}+\frac{9}{2}
Whakawehe \frac{27}{2}-2y ki te 3.
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