Whakaoti mō x
x=21
Graph
Tohaina
Kua tāruatia ki te papatopenga
77=4x-7
Pahekotia te x me 3x, ka 4x.
4x-7=77
Whakawhitihia ngā taha kia puta ki te taha mauī ngā kīanga tau taurangi katoa.
4x=77+7
Me tāpiri te 7 ki ngā taha e rua.
4x=84
Tāpirihia te 77 ki te 7, ka 84.
x=\frac{84}{4}
Whakawehea ngā taha e rua ki te 4.
x=21
Whakawehea te 84 ki te 4, kia riro ko 21.
Ngā Tauira
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