Whakaoti mō x
x=2
Graph
Tohaina
Kua tāruatia ki te papatopenga
3x+6+2x=7\left(x-1\right)+9
Whakamahia te āhuatanga tohatoha hei whakarea te 3 ki te x+2.
5x+6=7\left(x-1\right)+9
Pahekotia te 3x me 2x, ka 5x.
5x+6=7x-7+9
Whakamahia te āhuatanga tohatoha hei whakarea te 7 ki te x-1.
5x+6=7x+2
Tāpirihia te -7 ki te 9, ka 2.
5x+6-7x=2
Tangohia te 7x mai i ngā taha e rua.
-2x+6=2
Pahekotia te 5x me -7x, ka -2x.
-2x=2-6
Tangohia te 6 mai i ngā taha e rua.
-2x=-4
Tangohia te 6 i te 2, 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.
Ngā Tauira
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