Whakaoti mō x
x = \frac{72}{13} = 5\frac{7}{13} \approx 5.538461538
Graph
Tohaina
Kua tāruatia ki te papatopenga
216-12x=27x
Whakamahia te āhuatanga tohatoha hei whakarea te 12 ki te 18-x.
216-12x-27x=0
Tangohia te 27x mai i ngā taha e rua.
216-39x=0
Pahekotia te -12x me -27x, ka -39x.
-39x=-216
Tangohia te 216 mai i ngā taha e rua. Ko te tau i tango i te kore ka hua ko tōna korenga.
x=\frac{-216}{-39}
Whakawehea ngā taha e rua ki te -39.
x=\frac{72}{13}
Whakahekea te hautanga \frac{-216}{-39} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te -3.
Ngā Tauira
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Poukapa
\left[ \begin{array} { l l } { 2 } & { 3 } \\ { 5 } & { 4 } \end{array} \right] \left[ \begin{array} { l l l } { 2 } & { 0 } & { 3 } \\ { -1 } & { 1 } & { 5 } \end{array} \right]
whārite Simultaneous
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Whakarerekētanga
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Whakaurunga
\int _ { 0 } ^ { 1 } x e ^ { - x ^ { 2 } } d x
Ngā Tepe
\lim _{x \rightarrow-3} \frac{x^{2}-9}{x^{2}+2 x-3}