Whakaoti mō x
x=-2
Graph
Tohaina
Kua tāruatia ki te papatopenga
x-2=2x
Tē taea kia ōrite te tāupe x ki 2 nā te kore tautuhi i te whakawehenga mā te kore. Me whakarea ngā taha e rua o te whārite ki te 2\left(x-2\right), arā, te tauraro pātahi he tino iti rawa te kitea o 2,x-2.
x-2-2x=0
Tangohia te 2x mai i ngā taha e rua.
-x-2=0
Pahekotia te x me -2x, ka -x.
-x=2
Me tāpiri te 2 ki ngā taha e rua. Ko te tau i tāpiria he kore ka hua koia tonu.
x=-2
Me whakarea ngā taha e rua ki te -1.
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
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