Whakaoti mō y
y = \frac{11}{9} = 1\frac{2}{9} \approx 1.222222222
Graph
Tohaina
Kua tāruatia ki te papatopenga
2\left(9-y\right)+20y=40
Whakareatia ngā taha e rua o te whārite ki te 5.
18-2y+20y=40
Whakamahia te āhuatanga tohatoha hei whakarea te 2 ki te 9-y.
18+18y=40
Pahekotia te -2y me 20y, ka 18y.
18y=40-18
Tangohia te 18 mai i ngā taha e rua.
18y=22
Tangohia te 18 i te 40, ka 22.
y=\frac{22}{18}
Whakawehea ngā taha e rua ki te 18.
y=\frac{11}{9}
Whakahekea te hautanga \frac{22}{18} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 2.
Ngā Tauira
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{ x } ^ { 2 } - 4 x - 5 = 0
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whārite paerangi
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Arithmetic
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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
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Ngā Tepe
\lim _{x \rightarrow-3} \frac{x^{2}-9}{x^{2}+2 x-3}