Whakaoti mō x
x=\frac{x_{3}-80}{4}
Whakaoti mō x_3
x_{3}=4\left(x+20\right)
Graph
Tohaina
Kua tāruatia ki te papatopenga
80=x_{3}-4x
Pahekotia te -5x me x, ka -4x.
x_{3}-4x=80
Whakawhitihia ngā taha kia puta ki te taha mauī ngā kīanga tau taurangi katoa.
-4x=80-x_{3}
Tangohia te x_{3} mai i ngā taha e rua.
\frac{-4x}{-4}=\frac{80-x_{3}}{-4}
Whakawehea ngā taha e rua ki te -4.
x=\frac{80-x_{3}}{-4}
Mā te whakawehe ki te -4 ka wetekia te whakareanga ki te -4.
x=\frac{x_{3}}{4}-20
Whakawehe 80-x_{3} ki te -4.
80=x_{3}-4x
Pahekotia te -5x me x, ka -4x.
x_{3}-4x=80
Whakawhitihia ngā taha kia puta ki te taha mauī ngā kīanga tau taurangi katoa.
x_{3}=80+4x
Me tāpiri te 4x ki ngā taha e rua.
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