Whakaoti mō x
x=3
Graph
Tohaina
Kua tāruatia ki te papatopenga
21-2x=15
Whakawhitihia ngā taha kia puta ki te taha mauī ngā kīanga tau taurangi katoa.
-2x=15-21
Tangohia te 21 mai i ngā taha e rua.
-2x=-6
Tangohia te 21 i te 15, ka -6.
x=\frac{-6}{-2}
Whakawehea ngā taha e rua ki te -2.
x=3
Whakawehea te -6 ki te -2, kia riro ko 3.
Ngā Tauira
whārite tapawhā
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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}