Whakaoti mō x
x=13
Graph
Tohaina
Kua tāruatia ki te papatopenga
3x+8\left(-1\right)=x+18
Whakareatia te 2 ki te 4, ka 8.
3x-8=x+18
Whakareatia te 8 ki te -1, ka -8.
3x-8-x=18
Tangohia te x mai i ngā taha e rua.
2x-8=18
Pahekotia te 3x me -x, ka 2x.
2x=18+8
Me tāpiri te 8 ki ngā taha e rua.
2x=26
Tāpirihia te 18 ki te 8, ka 26.
x=\frac{26}{2}
Whakawehea ngā taha e rua ki te 2.
x=13
Whakawehea te 26 ki te 2, kia riro ko 13.
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