Whakaoti mō y
y=8
Graph
Tohaina
Kua tāruatia ki te papatopenga
-4y+21=-12+y-7
Pahekotia te 2y me -6y, ka -4y.
-4y+21=-19+y
Tangohia te 7 i te -12, ka -19.
-4y+21-y=-19
Tangohia te y mai i ngā taha e rua.
-5y+21=-19
Pahekotia te -4y me -y, ka -5y.
-5y=-19-21
Tangohia te 21 mai i ngā taha e rua.
-5y=-40
Tangohia te 21 i te -19, ka -40.
y=\frac{-40}{-5}
Whakawehea ngā taha e rua ki te -5.
y=8
Whakawehea te -40 ki te -5, kia riro ko 8.
Ngā Tauira
whārite tapawhā
{ x } ^ { 2 } - 4 x - 5 = 0
Āhuahanga
4 \sin \theta \cos \theta = 2 \sin \theta
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
\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
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}