Whakaoti mō k
k=3
Tohaina
Kua tāruatia ki te papatopenga
10k-15-\left(k+3\right)=9
Whakamahia te āhuatanga tohatoha hei whakarea te 5 ki te 2k-3.
10k-15-k-3=9
Hei kimi i te tauaro o k+3, kimihia te tauaro o ia taurangi.
9k-15-3=9
Pahekotia te 10k me -k, ka 9k.
9k-18=9
Tangohia te 3 i te -15, ka -18.
9k=9+18
Me tāpiri te 18 ki ngā taha e rua.
9k=27
Tāpirihia te 9 ki te 18, ka 27.
k=\frac{27}{9}
Whakawehea ngā taha e rua ki te 9.
k=3
Whakawehea te 27 ki te 9, kia riro ko 3.
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