Whakaoti mō x
x=3
Graph
Tohaina
Kua tāruatia ki te papatopenga
3x-4-\left(-2x\right)=x+8
Hei kimi i te tauaro o 4-2x, kimihia te tauaro o ia taurangi.
3x-4+2x=x+8
Ko te tauaro o -2x ko 2x.
5x-4=x+8
Pahekotia te 3x me 2x, ka 5x.
5x-4-x=8
Tangohia te x mai i ngā taha e rua.
4x-4=8
Pahekotia te 5x me -x, ka 4x.
4x=8+4
Me tāpiri te 4 ki ngā taha e rua.
4x=12
Tāpirihia te 8 ki te 4, ka 12.
x=\frac{12}{4}
Whakawehea ngā taha e rua ki te 4.
x=3
Whakawehea te 12 ki te 4, kia riro ko 3.
Ngā Tauira
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{ x } ^ { 2 } - 4 x - 5 = 0
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whārite paerangi
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\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
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Whakaurunga
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Ngā Tepe
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