Whakaoti mō y
y=8
Graph
Tohaina
Kua tāruatia ki te papatopenga
5y-15-\left(y-2\right)=19
Whakamahia te āhuatanga tohatoha hei whakarea te 5 ki te y-3.
5y-15-y-\left(-2\right)=19
Hei kimi i te tauaro o y-2, kimihia te tauaro o ia taurangi.
5y-15-y+2=19
Ko te tauaro o -2 ko 2.
4y-15+2=19
Pahekotia te 5y me -y, ka 4y.
4y-13=19
Tāpirihia te -15 ki te 2, ka -13.
4y=19+13
Me tāpiri te 13 ki ngā taha e rua.
4y=32
Tāpirihia te 19 ki te 13, ka 32.
y=\frac{32}{4}
Whakawehea ngā taha e rua ki te 4.
y=8
Whakawehea te 32 ki te 4, 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
y = 3x + 4
Arithmetic
699 * 533
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
\left. \begin{cases} { 8x+2y = 46 } \\ { 7x+3y = 47 } \end{cases} \right.
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}