Whakaoti i te -3(-20-j)<-4(-3j-6)

$$- 3 ( - 20 - j ) < - 4 ( - 3 j - 6 )$$

Whakaoti mō j

$$j>4$$

Ngā Upane Otinga

Whakamahia te āhuatanga tohatoha hei whakarea te -3 ki te -20-j.

$$60+3j<-4\left(-3j-6\right)$$

Whakamahia te āhuatanga tohatoha hei whakarea te -4 ki te -3j-6.

$$60+3j<12j+24$$

Tangohia te 12j mai i ngā taha e rua.

$$60+3j-12j<24$$

Pahekotia te 3j me -12j, ka -9j.

$$60-9j<24$$

Tangohia te 60 mai i ngā taha e rua.

$$-9j<24-60$$

Tangohia te 60 i te 24, ka -36.

$$-9j<-36$$

Whakawehea ngā taha e rua ki te -9. I te mea he tōraro a -9, ka huri te ahunga koreōrite.

$$j>\frac{-36}{-9}$$

Whakawehea te -36 ki te -9, kia riro ko 4.

$$j>4$$