Whakaoti mō x
x = \frac{250}{19} = 13\frac{3}{19} \approx 13.157894737
Graph
Tohaina
Kua tāruatia ki te papatopenga
8x-4000+5000=84x
Whakamahia te āhuatanga tohatoha hei whakarea te x-500 ki te 8.
8x+1000=84x
Tāpirihia te -4000 ki te 5000, ka 1000.
8x+1000-84x=0
Tangohia te 84x mai i ngā taha e rua.
-76x+1000=0
Pahekotia te 8x me -84x, ka -76x.
-76x=-1000
Tangohia te 1000 mai i ngā taha e rua. Ko te tau i tango i te kore ka hua ko tōna korenga.
x=\frac{-1000}{-76}
Whakawehea ngā taha e rua ki te -76.
x=\frac{250}{19}
Whakahekea te hautanga \frac{-1000}{-76} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te -4.
Ngā Tauira
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whārite Simultaneous
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Whakarerekētanga
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