Whakaoti mō x
x=8
Graph
Tohaina
Kua tāruatia ki te papatopenga
10x-20=7\left(x+1\right)-3
Whakamahia te āhuatanga tohatoha hei whakarea te 5 ki te 2x-4.
10x-20=7x+7-3
Whakamahia te āhuatanga tohatoha hei whakarea te 7 ki te x+1.
10x-20=7x+4
Tangohia te 3 i te 7, ka 4.
10x-20-7x=4
Tangohia te 7x mai i ngā taha e rua.
3x-20=4
Pahekotia te 10x me -7x, ka 3x.
3x=4+20
Me tāpiri te 20 ki ngā taha e rua.
3x=24
Tāpirihia te 4 ki te 20, ka 24.
x=\frac{24}{3}
Whakawehea ngā taha e rua ki te 3.
x=8
Whakawehea te 24 ki te 3, kia riro ko 8.
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}