Whakaoti mō x
x=2y-7
Whakaoti mō y
y=\frac{x+7}{2}
Graph
Tohaina
Kua tāruatia ki te papatopenga
-x=7-2y
Tangohia te 2y mai i ngā taha e rua.
\frac{-x}{-1}=\frac{7-2y}{-1}
Whakawehea ngā taha e rua ki te -1.
x=\frac{7-2y}{-1}
Mā te whakawehe ki te -1 ka wetekia te whakareanga ki te -1.
x=2y-7
Whakawehe 7-2y ki te -1.
2y=7+x
Me tāpiri te x ki ngā taha e rua.
2y=x+7
He hanga arowhānui tō te whārite.
\frac{2y}{2}=\frac{x+7}{2}
Whakawehea ngā taha e rua ki te 2.
y=\frac{x+7}{2}
Mā te whakawehe ki te 2 ka wetekia te whakareanga ki te 2.
Ngā Tauira
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{ x } ^ { 2 } - 4 x - 5 = 0
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\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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\int _ { 0 } ^ { 1 } x e ^ { - x ^ { 2 } } d x
Ngā Tepe
\lim _{x \rightarrow-3} \frac{x^{2}-9}{x^{2}+2 x-3}