Tīpoka ki ngā ihirangi matua
Whakaoti mō x
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Ngā Raru Ōrite mai i te Rapu Tukutuku

Tohaina

-120x<1920000
Whakareatia te 800 ki te 2400, ka 1920000.
x>\frac{1920000}{-120}
Whakawehea ngā taha e rua ki te -120. I te mea he tōraro a -120, ka huri te ahunga koreōrite.
x>-16000
Whakawehea te 1920000 ki te -120, kia riro ko -16000.