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Whakaoti mō x
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Tohaina

3=15-10x+2
Whakamahia te āhuatanga tohatoha hei whakarea te 3-2x ki te 5.
3=17-10x
Tāpirihia te 15 ki te 2, ka 17.
17-10x=3
Whakawhitihia ngā taha kia puta ki te taha mauī ngā kīanga tau taurangi katoa.
-10x=3-17
Tangohia te 17 mai i ngā taha e rua.
-10x=-14
Tangohia te 17 i te 3, ka -14.
x=\frac{-14}{-10}
Whakawehea ngā taha e rua ki te -10.
x=\frac{7}{5}
Whakahekea te hautanga \frac{-14}{-10} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te -2.