Whakaoti mō s
s\geq 12
Tohaina
Kua tāruatia ki te papatopenga
8s+136\leq 4\left(3s+17\right)+20
Whakamahia te āhuatanga tohatoha hei whakarea te 8 ki te s+17.
8s+136\leq 12s+68+20
Whakamahia te āhuatanga tohatoha hei whakarea te 4 ki te 3s+17.
8s+136\leq 12s+88
Tāpirihia te 68 ki te 20, ka 88.
8s+136-12s\leq 88
Tangohia te 12s mai i ngā taha e rua.
-4s+136\leq 88
Pahekotia te 8s me -12s, ka -4s.
-4s\leq 88-136
Tangohia te 136 mai i ngā taha e rua.
-4s\leq -48
Tangohia te 136 i te 88, ka -48.
s\geq \frac{-48}{-4}
Whakawehea ngā taha e rua ki te -4. Nō te mea he <0 te -4, ka hurihia te ahunga koreōrite.
s\geq 12
Whakawehea te -48 ki te -4, kia riro ko 12.
Ngā Tauira
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