\left\{ \begin{array} { l } { x + y + z = 15 } \\ { x - y + z = 5 } \\ { x - y - z = - 9 } \end{array} \right.
Whakaoti mō x, y, z
x=3
y=5
z=7
Tohaina
Kua tāruatia ki te papatopenga
x=-y-z+15
Me whakaoti te x+y+z=15 mō x.
-y-z+15-y+z=5 -y-z+15-y-z=-9
Whakakapia te -y-z+15 mō te x i te whārite tuarua me te tuatoru.
y=5 z=12-y
Me whakaoti ēnei whārite mō y me z takitahi.
z=12-5
Whakakapia te 5 mō te y i te whārite z=12-y.
z=7
Tātaitia te z i te z=12-5.
x=-5-7+15
Whakakapia te 5 mō te y me te 7 mō z i te whārite x=-y-z+15.
x=3
Tātaitia te x i te x=-5-7+15.
x=3 y=5 z=7
Kua oti te pūnaha te whakatau.
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}