Whakaoti mō x
x=2
Graph
Tohaina
Kua tāruatia ki te papatopenga
3x-5-7-\left(-4x\right)=2
Hei kimi i te tauaro o 7-4x, kimihia te tauaro o ia taurangi.
3x-5-7+4x=2
Ko te tauaro o -4x ko 4x.
3x-12+4x=2
Tangohia te 7 i te -5, ka -12.
7x-12=2
Pahekotia te 3x me 4x, ka 7x.
7x=2+12
Me tāpiri te 12 ki ngā taha e rua.
7x=14
Tāpirihia te 2 ki te 12, ka 14.
x=\frac{14}{7}
Whakawehea ngā taha e rua ki te 7.
x=2
Whakawehea te 14 ki te 7, kia riro ko 2.
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