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Tohaina

34-2x-5=2\left(x+7\right)+x
Hei kimi i te tauaro o 2x+5, kimihia te tauaro o ia taurangi.
29-2x=2\left(x+7\right)+x
Tangohia te 5 i te 34, ka 29.
29-2x=2x+14+x
Whakamahia te āhuatanga tohatoha hei whakarea te 2 ki te x+7.
29-2x=3x+14
Pahekotia te 2x me x, ka 3x.
29-2x-3x=14
Tangohia te 3x mai i ngā taha e rua.
29-5x=14
Pahekotia te -2x me -3x, ka -5x.
-5x=14-29
Tangohia te 29 mai i ngā taha e rua.
-5x=-15
Tangohia te 29 i te 14, ka -15.
x=\frac{-15}{-5}
Whakawehea ngā taha e rua ki te -5.
x=3
Whakawehea te -15 ki te -5, kia riro ko 3.