Whakaoti mō x
x = -\frac{17}{5} = -3\frac{2}{5} = -3.4
Graph
Tohaina
Kua tāruatia ki te papatopenga
x-3-\left(-x\right)=7\left(x+2\right)
Hei kimi i te tauaro o 3-x, kimihia te tauaro o ia taurangi.
x-3+x=7\left(x+2\right)
Ko te tauaro o -x ko x.
2x-3=7\left(x+2\right)
Pahekotia te x me x, ka 2x.
2x-3=7x+14
Whakamahia te āhuatanga tohatoha hei whakarea te 7 ki te x+2.
2x-3-7x=14
Tangohia te 7x mai i ngā taha e rua.
-5x-3=14
Pahekotia te 2x me -7x, ka -5x.
-5x=14+3
Me tāpiri te 3 ki ngā taha e rua.
-5x=17
Tāpirihia te 14 ki te 3, ka 17.
x=\frac{17}{-5}
Whakawehea ngā taha e rua ki te -5.
x=-\frac{17}{5}
Ka taea te hautanga \frac{17}{-5} te tuhi anō ko -\frac{17}{5} mā te tango i te tohu tōraro.
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}