Whakaoti mō s
s=2
Tohaina
Kua tāruatia ki te papatopenga
7s+12-4s=18
Whakamahia te āhuatanga tohatoha hei whakarea te 4 ki te 3-s.
3s+12=18
Pahekotia te 7s me -4s, ka 3s.
3s=18-12
Tangohia te 12 mai i ngā taha e rua.
3s=6
Tangohia te 12 i te 18, ka 6.
s=\frac{6}{3}
Whakawehea ngā taha e rua ki te 3.
s=2
Whakawehea te 6 ki te 3, kia riro ko 2.
Ngā Tauira
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{ x } ^ { 2 } - 4 x - 5 = 0
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