Whakaoti mō x
x\geq 300
Graph
Tohaina
Kua tāruatia ki te papatopenga
60+0.6x-0.8x\leq 0
Tangohia te 0.8x mai i ngā taha e rua.
60-0.2x\leq 0
Pahekotia te 0.6x me -0.8x, ka -0.2x.
-0.2x\leq -60
Tangohia te 60 mai i ngā taha e rua. Ko te tau i tango i te kore ka hua ko tōna korenga.
x\geq \frac{-60}{-0.2}
Whakawehea ngā taha e rua ki te -0.2. I te mea he tōraro a -0.2, ka huri te ahunga koreōrite.
x\geq \frac{-600}{-2}
Whakarohaina te \frac{-60}{-0.2} mā te whakarea i te taurunga me te tauraro ki te 10.
x\geq 300
Whakawehea te -600 ki te -2, kia riro ko 300.
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