Whakaoti mō n
n=9
Tohaina
Kua tāruatia ki te papatopenga
5n-16-n=20
Tangohia te n mai i ngā taha e rua.
4n-16=20
Pahekotia te 5n me -n, ka 4n.
4n=20+16
Me tāpiri te 16 ki ngā taha e rua.
4n=36
Tāpirihia te 20 ki te 16, ka 36.
n=\frac{36}{4}
Whakawehea ngā taha e rua ki te 4.
n=9
Whakawehea te 36 ki te 4, kia riro ko 9.
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
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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}