Whakaoti mō a
a\leq -\frac{45}{2}
Tohaina
Kua tāruatia ki te papatopenga
250a+6300-210a\leq 5400
Whakamahia te āhuatanga tohatoha hei whakarea te 210 ki te 30-a.
40a+6300\leq 5400
Pahekotia te 250a me -210a, ka 40a.
40a\leq 5400-6300
Tangohia te 6300 mai i ngā taha e rua.
40a\leq -900
Tangohia te 6300 i te 5400, ka -900.
a\leq \frac{-900}{40}
Whakawehea ngā taha e rua ki te 40. I te mea he tōrunga te 40, kāore e huri te ahunga koreōrite.
a\leq -\frac{45}{2}
Whakahekea te hautanga \frac{-900}{40} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 20.
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