\left\{ \begin{array} { l } { x + y = 220 } \\ { \frac { 2 } { 5 } x = \frac { 3 } { 8 } x - 5 } \end{array} \right.
Whakaoti mō x, y
x=-200
y=420
Graph
Tohaina
Kua tāruatia ki te papatopenga
\frac{2}{5}x-\frac{3}{8}x=-5
Whakaarohia te whārite tuarua. Tangohia te \frac{3}{8}x mai i ngā taha e rua.
\frac{1}{40}x=-5
Pahekotia te \frac{2}{5}x me -\frac{3}{8}x, ka \frac{1}{40}x.
x=-5\times 40
Me whakarea ngā taha e rua ki te 40, te tau utu o \frac{1}{40}.
x=-200
Whakareatia te -5 ki te 40, ka -200.
-200+y=220
Whakaarohia te whārite tuatahi. Me kōkuhu ngā uara tāupe mōhiotia ki te whārite.
y=220+200
Me tāpiri te 200 ki ngā taha e rua.
y=420
Tāpirihia te 220 ki te 200, ka 420.
x=-200 y=420
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}