Whakaoti mō x
x = \frac{17}{8} = 2\frac{1}{8} = 2.125
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Tohaina
Kua tāruatia ki te papatopenga
2\left(x+3\right)-\left(2x+5\right)=2\left(x-2\right)\times 3+\left(x-2\right)\times 2
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 x-2,2x-4,2.
2x+6-\left(2x+5\right)=2\left(x-2\right)\times 3+\left(x-2\right)\times 2
Whakamahia te āhuatanga tohatoha hei whakarea te 2 ki te x+3.
2x+6-2x-5=2\left(x-2\right)\times 3+\left(x-2\right)\times 2
Hei kimi i te tauaro o 2x+5, kimihia te tauaro o ia taurangi.
6-5=2\left(x-2\right)\times 3+\left(x-2\right)\times 2
Pahekotia te 2x me -2x, ka 0.
1=2\left(x-2\right)\times 3+\left(x-2\right)\times 2
Tangohia te 5 i te 6, ka 1.
1=6\left(x-2\right)+\left(x-2\right)\times 2
Whakareatia te 2 ki te 3, ka 6.
1=6x-12+\left(x-2\right)\times 2
Whakamahia te āhuatanga tohatoha hei whakarea te 6 ki te x-2.
1=6x-12+2x-4
Whakamahia te āhuatanga tohatoha hei whakarea te x-2 ki te 2.
1=8x-12-4
Pahekotia te 6x me 2x, ka 8x.
1=8x-16
Tangohia te 4 i te -12, ka -16.
8x-16=1
Whakawhitihia ngā taha kia puta ki te taha mauī ngā kīanga tau taurangi katoa.
8x=1+16
Me tāpiri te 16 ki ngā taha e rua.
8x=17
Tāpirihia te 1 ki te 16, ka 17.
x=\frac{17}{8}
Whakawehea ngā taha e rua ki te 8.
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