Whakaoti mō x
x=\frac{P-25y}{40}
Whakaoti mō P
P=40x+25y
Graph
Tohaina
Kua tāruatia ki te papatopenga
40x+25y=P
Whakawhitihia ngā taha kia puta ki te taha mauī ngā kīanga tau taurangi katoa.
40x=P-25y
Tangohia te 25y mai i ngā taha e rua.
\frac{40x}{40}=\frac{P-25y}{40}
Whakawehea ngā taha e rua ki te 40.
x=\frac{P-25y}{40}
Mā te whakawehe ki te 40 ka wetekia te whakareanga ki te 40.
x=\frac{P}{40}-\frac{5y}{8}
Whakawehe P-25y ki te 40.
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