2 x + 7 < 2 ( 4 x - 1
Whakaoti mō x
x>\frac{3}{2}
Graph
Pātaitai
2 x + 7 < 2 ( 4 x - 1
Tohaina
Kua tāruatia ki te papatopenga
2x+7<8x-2
Whakamahia te āhuatanga tohatoha hei whakarea te 2 ki te 4x-1.
2x+7-8x<-2
Tangohia te 8x mai i ngā taha e rua.
-6x+7<-2
Pahekotia te 2x me -8x, ka -6x.
-6x<-2-7
Tangohia te 7 mai i ngā taha e rua.
-6x<-9
Tangohia te 7 i te -2, ka -9.
x>\frac{-9}{-6}
Whakawehea ngā taha e rua ki te -6. Nō te mea he <0 te -6, ka hurihia te ahunga koreōrite.
x>\frac{3}{2}
Whakahekea te hautanga \frac{-9}{-6} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te -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
\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}