Whakaoti mō x
x = \frac{21}{2} = 10\frac{1}{2} = 10.5
Graph
Tohaina
Kua tāruatia ki te papatopenga
25+x-3x=4
Tangohia te 3x mai i ngā taha e rua.
25-2x=4
Pahekotia te x me -3x, ka -2x.
-2x=4-25
Tangohia te 25 mai i ngā taha e rua.
-2x=-21
Tangohia te 25 i te 4, ka -21.
x=\frac{-21}{-2}
Whakawehea ngā taha e rua ki te -2.
x=\frac{21}{2}
Ka taea te hautanga \frac{-21}{-2} te whakamāmā ki te \frac{21}{2} mā te tango tahi i te tohu tōraro i te taurunga me te tauraro.
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}