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Whakaoti mō x_9
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Tohaina

-\frac{12}{3}+\frac{2}{3}=x_{9}+5
Me tahuri te -4 ki te hautau -\frac{12}{3}.
\frac{-12+2}{3}=x_{9}+5
Tā te mea he rite te tauraro o -\frac{12}{3} me \frac{2}{3}, me tāpiri rāua mā te tāpiri i ō raua taurunga.
-\frac{10}{3}=x_{9}+5
Tāpirihia te -12 ki te 2, ka -10.
x_{9}+5=-\frac{10}{3}
Whakawhitihia ngā taha kia puta ki te taha mauī ngā kīanga tau taurangi katoa.
x_{9}=-\frac{10}{3}-5
Tangohia te 5 mai i ngā taha e rua.
x_{9}=-\frac{10}{3}-\frac{15}{3}
Me tahuri te 5 ki te hautau \frac{15}{3}.
x_{9}=\frac{-10-15}{3}
Tā te mea he rite te tauraro o -\frac{10}{3} me \frac{15}{3}, me tango rāua mā te tango i ō raua taurunga.
x_{9}=-\frac{25}{3}
Tangohia te 15 i te -10, ka -25.