Whakaoti mō y
y=8
Graph
Tohaina
Kua tāruatia ki te papatopenga
7\left(38-4y\right)+15y=162
Whakareatia ngā taha e rua o te whārite ki te 3.
266-28y+15y=162
Whakamahia te āhuatanga tohatoha hei whakarea te 7 ki te 38-4y.
266-13y=162
Pahekotia te -28y me 15y, ka -13y.
-13y=162-266
Tangohia te 266 mai i ngā taha e rua.
-13y=-104
Tangohia te 266 i te 162, ka -104.
y=\frac{-104}{-13}
Whakawehea ngā taha e rua ki te -13.
y=8
Whakawehea te -104 ki te -13, 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}