Whakaoti mō x
x=80
Graph
Tohaina
Kua tāruatia ki te papatopenga
0.4x=21+11
Me tāpiri te 11 ki ngā taha e rua.
0.4x=32
Tāpirihia te 21 ki te 11, ka 32.
x=\frac{32}{0.4}
Whakawehea ngā taha e rua ki te 0.4.
x=\frac{320}{4}
Whakarohaina te \frac{32}{0.4} mā te whakarea i te taurunga me te tauraro ki te 10.
x=80
Whakawehea te 320 ki te 4, kia riro ko 80.
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