Whakaoti mō x
x = \frac{7}{2} = 3\frac{1}{2} = 3.5
Graph
Tohaina
Kua tāruatia ki te papatopenga
14x-21=6x+7
Whakamahia te āhuatanga tohatoha hei whakarea te 7 ki te 2x-3.
14x-21-6x=7
Tangohia te 6x mai i ngā taha e rua.
8x-21=7
Pahekotia te 14x me -6x, ka 8x.
8x=7+21
Me tāpiri te 21 ki ngā taha e rua.
8x=28
Tāpirihia te 7 ki te 21, ka 28.
x=\frac{28}{8}
Whakawehea ngā taha e rua ki te 8.
x=\frac{7}{2}
Whakahekea te hautanga \frac{28}{8} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 4.
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}