Whakaoti mō x
x\geq 3
Graph
Tohaina
Kua tāruatia ki te papatopenga
x-0.3x\geq 2.1
Tangohia te 0.3x mai i ngā taha e rua.
0.7x\geq 2.1
Pahekotia te x me -0.3x, ka 0.7x.
x\geq \frac{2.1}{0.7}
Whakawehea ngā taha e rua ki te 0.7. I te mea he tōrunga te 0.7, kāore e huri te ahunga koreōrite.
x\geq \frac{21}{7}
Whakarohaina te \frac{2.1}{0.7} mā te whakarea i te taurunga me te tauraro ki te 10.
x\geq 3
Whakawehea te 21 ki te 7, kia riro ko 3.
Ngā Tauira
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