Whakaoti mō x
x=3
Graph
Tohaina
Kua tāruatia ki te papatopenga
3x-12+4x=9
Me tāpiri te 4x ki ngā taha e rua.
7x-12=9
Pahekotia te 3x me 4x, ka 7x.
7x=9+12
Me tāpiri te 12 ki ngā taha e rua.
7x=21
Tāpirihia te 9 ki te 12, ka 21.
x=\frac{21}{7}
Whakawehea ngā taha e rua ki te 7.
x=3
Whakawehea te 21 ki te 7, kia riro ko 3.
Ngā Tauira
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{ x } ^ { 2 } - 4 x - 5 = 0
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whārite paerangi
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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}