Whakaoti mō x
x=3
Graph
Tohaina
Kua tāruatia ki te papatopenga
-2x+13=8x-3x-8
Pahekotia te 7x me -9x, ka -2x.
-2x+13=5x-8
Pahekotia te 8x me -3x, ka 5x.
-2x+13-5x=-8
Tangohia te 5x mai i ngā taha e rua.
-7x+13=-8
Pahekotia te -2x me -5x, ka -7x.
-7x=-8-13
Tangohia te 13 mai i ngā taha e rua.
-7x=-21
Tangohia te 13 i te -8, ka -21.
x=\frac{-21}{-7}
Whakawehea ngā taha e rua ki te -7.
x=3
Whakawehea te -21 ki te -7, kia riro ko 3.
Ngā Tauira
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Āhuahanga
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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
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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}