Whakaoti mō x
x=2
Graph
Tohaina
Kua tāruatia ki te papatopenga
5\left(x+2\right)+4\left(x+3\right)=40
Me whakarea ngā taha e rua o te whārite ki te 20, arā, te tauraro pātahi he tino iti rawa te kitea o 4,5.
5x+10+4\left(x+3\right)=40
Whakamahia te āhuatanga tohatoha hei whakarea te 5 ki te x+2.
5x+10+4x+12=40
Whakamahia te āhuatanga tohatoha hei whakarea te 4 ki te x+3.
9x+10+12=40
Pahekotia te 5x me 4x, ka 9x.
9x+22=40
Tāpirihia te 10 ki te 12, ka 22.
9x=40-22
Tangohia te 22 mai i ngā taha e rua.
9x=18
Tangohia te 22 i te 40, ka 18.
x=\frac{18}{9}
Whakawehea ngā taha e rua ki te 9.
x=2
Whakawehea te 18 ki te 9, kia riro ko 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
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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}