Whakaoti mō n
n=-3
Tohaina
Kua tāruatia ki te papatopenga
7+2n=3-2n-8
Whakamahia te āhuatanga tohatoha hei whakarea te -2 ki te n+4.
7+2n=-5-2n
Tangohia te 8 i te 3, ka -5.
7+2n+2n=-5
Me tāpiri te 2n ki ngā taha e rua.
7+4n=-5
Pahekotia te 2n me 2n, ka 4n.
4n=-5-7
Tangohia te 7 mai i ngā taha e rua.
4n=-12
Tangohia te 7 i te -5, ka -12.
n=\frac{-12}{4}
Whakawehea ngā taha e rua ki te 4.
n=-3
Whakawehea te -12 ki te 4, kia riro ko -3.
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
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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}