Whakaoti mō x
x=3
Graph
Tohaina
Kua tāruatia ki te papatopenga
x-6+9x-12=4x
Whakareatia ngā taha e rua o te whārite ki te 3.
10x-6-12=4x
Pahekotia te x me 9x, ka 10x.
10x-18=4x
Tangohia te 12 i te -6, ka -18.
10x-18-4x=0
Tangohia te 4x mai i ngā taha e rua.
6x-18=0
Pahekotia te 10x me -4x, ka 6x.
6x=18
Me tāpiri te 18 ki ngā taha e rua. Ko te tau i tāpiria he kore ka hua koia tonu.
x=\frac{18}{6}
Whakawehea ngā taha e rua ki te 6.
x=3
Whakawehea te 18 ki te 6, kia riro ko 3.
Ngā Tauira
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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]
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Ngā Tepe
\lim _{x \rightarrow-3} \frac{x^{2}-9}{x^{2}+2 x-3}