Whakaoti mō w
w=4
Tohaina
Kua tāruatia ki te papatopenga
28-6w+w^{2}=4+w^{2}
Tāpirihia te 10 ki te 18, ka 28.
28-6w+w^{2}-w^{2}=4
Tangohia te w^{2} mai i ngā taha e rua.
28-6w=4
Pahekotia te w^{2} me -w^{2}, ka 0.
-6w=4-28
Tangohia te 28 mai i ngā taha e rua.
-6w=-24
Tangohia te 28 i te 4, ka -24.
w=\frac{-24}{-6}
Whakawehea ngā taha e rua ki te -6.
w=4
Whakawehea te -24 ki te -6, kia riro ko 4.
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