Whakaoti mō y
y=-7
Graph
Tohaina
Kua tāruatia ki te papatopenga
9\left(-2\right)y-81=25y+220
Me whakarea ngā taha e rua o te whārite ki te 45, arā, te tauraro pātahi he tino iti rawa te kitea o 5,9.
-18y-81=25y+220
Whakareatia te 9 ki te -2, ka -18.
-18y-81-25y=220
Tangohia te 25y mai i ngā taha e rua.
-43y-81=220
Pahekotia te -18y me -25y, ka -43y.
-43y=220+81
Me tāpiri te 81 ki ngā taha e rua.
-43y=301
Tāpirihia te 220 ki te 81, ka 301.
y=\frac{301}{-43}
Whakawehea ngā taha e rua ki te -43.
y=-7
Whakawehea te 301 ki te -43, kia riro ko -7.
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}