Whakaoti mō x
x=2
Graph
Tohaina
Kua tāruatia ki te papatopenga
\left(x-1\right)\times 3=x+1
Tē taea kia ōrite te tāupe x ki tētahi o ngā uara -1,1 nā te kore tautuhi i te whakawehenga mā te kore. Me whakarea ngā taha e rua o te whārite ki te \left(x-1\right)\left(x+1\right), arā, te tauraro pātahi he tino iti rawa te kitea o x+1,x-1.
3x-3=x+1
Whakamahia te āhuatanga tohatoha hei whakarea te x-1 ki te 3.
3x-3-x=1
Tangohia te x mai i ngā taha e rua.
2x-3=1
Pahekotia te 3x me -x, ka 2x.
2x=1+3
Me tāpiri te 3 ki ngā taha e rua.
2x=4
Tāpirihia te 1 ki te 3, ka 4.
x=\frac{4}{2}
Whakawehea ngā taha e rua ki te 2.
x=2
Whakawehea te 4 ki te 2, kia riro ko 2.
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