Whakaoti i te 30x/100+12/100(600)>15/100(x+600)

$$\frac { 30 x } { 100 } + \frac { 12 } { 100 } ( 600 ) > \frac { 15 } { 100 } ( x + 600 )$$

Whakaoti mō x

$$x>120$$

Ngā Upane Otinga

Whakareatia ngā taha e rua o te whārite ki te 100. I te mea he tōrunga te 100, kāore e huri te ahunga koreōrite.

$$30x+12\times 600>15\left(x+600\right)$$

Whakareatia te 12 ki te 600, ka 7200.

$$30x+7200>15\left(x+600\right)$$

Whakamahia te āhuatanga tohatoha hei whakarea te 15 ki te x+600.

$$30x+7200>15x+9000$$

Tangohia te 15x mai i ngā taha e rua.

$$30x+7200-15x>9000$$

Pahekotia te 30x me -15x, ka 15x.

$$15x+7200>9000$$

Tangohia te 7200 mai i ngā taha e rua.

$$15x>9000-7200$$

Tangohia te 7200 i te 9000, ka 1800.

$$15x>1800$$

Whakawehea ngā taha e rua ki te 15. I te mea he tōrunga te 15, kāore e huri te ahunga koreōrite.

$$x>\frac{1800}{15}$$

Whakawehea te 1800 ki te 15, kia riro ko 120.

$$x>120$$