Whakaoti mō x
x=25000000
Graph
Tohaina
Kua tāruatia ki te papatopenga
x-x\times 0.2=20000000
Tangohia te x\times 0.2 mai i ngā taha e rua.
0.8x=20000000
Pahekotia te x me -x\times 0.2, ka 0.8x.
x=\frac{20000000}{0.8}
Whakawehea ngā taha e rua ki te 0.8.
x=\frac{200000000}{8}
Whakarohaina te \frac{20000000}{0.8} mā te whakarea i te taurunga me te tauraro ki te 10.
x=25000000
Whakawehea te 200000000 ki te 8, kia riro ko 25000000.
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