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Whakaoti mō x
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Ngā Raru Ōrite mai i te Rapu Tukutuku

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12x+3\left(x-1\right)=18-2\left(2x-1\right)
Me whakarea ngā taha e rua o te whārite ki te 6, arā, te tauraro pātahi he tino iti rawa te kitea o 2,3.
12x+3x-3=18-2\left(2x-1\right)
Whakamahia te āhuatanga tohatoha hei whakarea te 3 ki te x-1.
15x-3=18-2\left(2x-1\right)
Pahekotia te 12x me 3x, ka 15x.
15x-3=18-4x+2
Whakamahia te āhuatanga tohatoha hei whakarea te -2 ki te 2x-1.
15x-3=20-4x
Tāpirihia te 18 ki te 2, ka 20.
15x-3+4x=20
Me tāpiri te 4x ki ngā taha e rua.
19x-3=20
Pahekotia te 15x me 4x, ka 19x.
19x=20+3
Me tāpiri te 3 ki ngā taha e rua.
19x=23
Tāpirihia te 20 ki te 3, ka 23.
x=\frac{23}{19}
Whakawehea ngā taha e rua ki te 19.