Whakaoti mō w
w=-3
Tohaina
Kua tāruatia ki te papatopenga
-7w+2w=15
Me tāpiri te 2w ki ngā taha e rua.
-5w=15
Pahekotia te -7w me 2w, ka -5w.
w=\frac{15}{-5}
Whakawehea ngā taha e rua ki te -5.
w=-3
Whakawehea te 15 ki te -5, kia riro ko -3.
Ngā Tauira
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{ x } ^ { 2 } - 4 x - 5 = 0
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Whakarerekētanga
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