Whakaoti mō x
x=\frac{10y-25}{9}
Whakaoti mō y
y=\frac{9x}{10}+2.5
Graph
Tohaina
Kua tāruatia ki te papatopenga
0.9x+2.5=y
Whakawhitihia ngā taha kia puta ki te taha mauī ngā kīanga tau taurangi katoa.
0.9x=y-2.5
Tangohia te 2.5 mai i ngā taha e rua.
\frac{0.9x}{0.9}=\frac{y-2.5}{0.9}
Whakawehea ngā taha e rua o te whārite ki te 0.9, he ōrite ki te whakarea i ngā taha e rua ki te tau huripoki o te hautanga.
x=\frac{y-2.5}{0.9}
Mā te whakawehe ki te 0.9 ka wetekia te whakareanga ki te 0.9.
x=\frac{10y-25}{9}
Whakawehe y-2.5 ki te 0.9 mā te whakarea y-2.5 ki te tau huripoki o 0.9.
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