Whakaoti mō x
x=51
Graph
Tohaina
Kua tāruatia ki te papatopenga
30x+80\left(0-12-x\right)=\left(12-x\right)\times 90
Whakareatia te 0 ki te 6, ka 0.
30x+80\left(-12-x\right)=\left(12-x\right)\times 90
Tangohia te 12 i te 0, ka -12.
30x-960-80x=\left(12-x\right)\times 90
Whakamahia te āhuatanga tohatoha hei whakarea te 80 ki te -12-x.
-50x-960=\left(12-x\right)\times 90
Pahekotia te 30x me -80x, ka -50x.
-50x-960=1080-90x
Whakamahia te āhuatanga tohatoha hei whakarea te 12-x ki te 90.
-50x-960+90x=1080
Me tāpiri te 90x ki ngā taha e rua.
40x-960=1080
Pahekotia te -50x me 90x, ka 40x.
40x=1080+960
Me tāpiri te 960 ki ngā taha e rua.
40x=2040
Tāpirihia te 1080 ki te 960, ka 2040.
x=\frac{2040}{40}
Whakawehea ngā taha e rua ki te 40.
x=51
Whakawehea te 2040 ki te 40, kia riro ko 51.
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}