Whakaoti mō x
x=-4
Graph
Tohaina
Kua tāruatia ki te papatopenga
0=-78+6x-9x+42-6x
Tangohia te 33 i te -45, ka -78.
0=-78-3x+42-6x
Pahekotia te 6x me -9x, ka -3x.
0=-36-3x-6x
Tāpirihia te -78 ki te 42, ka -36.
0=-36-9x
Pahekotia te -3x me -6x, ka -9x.
-36-9x=0
Whakawhitihia ngā taha kia puta ki te taha mauī ngā kīanga tau taurangi katoa.
-9x=36
Me tāpiri te 36 ki ngā taha e rua. Ko te tau i tāpiria he kore ka hua koia tonu.
x=\frac{36}{-9}
Whakawehea ngā taha e rua ki te -9.
x=-4
Whakawehea te 36 ki te -9, kia riro ko -4.
Ngā Tauira
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Āhuahanga
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Whakarerekētanga
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Ngā Tepe
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