Whakaoti mō x
x = -\frac{9}{5} = -1\frac{4}{5} = -1.8
Graph
Tohaina
Kua tāruatia ki te papatopenga
15x+6=5x-12
Whakamahia te āhuatanga tohatoha hei whakarea te 3 ki te 5x+2.
15x+6-5x=-12
Tangohia te 5x mai i ngā taha e rua.
10x+6=-12
Pahekotia te 15x me -5x, ka 10x.
10x=-12-6
Tangohia te 6 mai i ngā taha e rua.
10x=-18
Tangohia te 6 i te -12, ka -18.
x=\frac{-18}{10}
Whakawehea ngā taha e rua ki te 10.
x=-\frac{9}{5}
Whakahekea te hautanga \frac{-18}{10} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 2.
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}