Whakaoti mō x
x=-4
Graph
Tohaina
Kua tāruatia ki te papatopenga
2x-6=4x+2
Whakamahia te āhuatanga tohatoha hei whakarea te 2 ki te x-3.
2x-6-4x=2
Tangohia te 4x mai i ngā taha e rua.
-2x-6=2
Pahekotia te 2x me -4x, ka -2x.
-2x=2+6
Me tāpiri te 6 ki ngā taha e rua.
-2x=8
Tāpirihia te 2 ki te 6, ka 8.
x=\frac{8}{-2}
Whakawehea ngā taha e rua ki te -2.
x=-4
Whakawehea te 8 ki te -2, kia riro ko -4.
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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Whakarerekētanga
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