Whakaoti mō k
k = -\frac{10}{3} = -3\frac{1}{3} \approx -3.333333333
Tohaina
Kua tāruatia ki te papatopenga
2+2k=-28-7k
Whakareatia ngā taha e rua o te whārite ki te 7.
2+2k+7k=-28
Me tāpiri te 7k ki ngā taha e rua.
2+9k=-28
Pahekotia te 2k me 7k, ka 9k.
9k=-28-2
Tangohia te 2 mai i ngā taha e rua.
9k=-30
Tangohia te 2 i te -28, ka -30.
k=\frac{-30}{9}
Whakawehea ngā taha e rua ki te 9.
k=-\frac{10}{3}
Whakahekea te hautanga \frac{-30}{9} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 3.
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