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Tohaina

3\left(5-2x+4\right)+x=2
Whakamahia te āhuatanga tohatoha hei whakarea te -2 ki te x-2.
3\left(9-2x\right)+x=2
Tāpirihia te 5 ki te 4, ka 9.
27-6x+x=2
Whakamahia te āhuatanga tohatoha hei whakarea te 3 ki te 9-2x.
27-5x=2
Pahekotia te -6x me x, ka -5x.
-5x=2-27
Tangohia te 27 mai i ngā taha e rua.
-5x=-25
Tangohia te 27 i te 2, ka -25.
x=\frac{-25}{-5}
Whakawehea ngā taha e rua ki te -5.
x=5
Whakawehea te -25 ki te -5, kia riro ko 5.