Whakaoti i te 24+x/12+x=0.4

$$\frac { 24 + x } { 12 + x } = 0.4$$

Whakaoti mō x

$$x=-32$$

Ngā Upane mō te Whakaoti Whārite Rārangi

Tē taea kia ōrite te tāupe x ki -12 nā te kore tautuhi i te whakawehenga mā te kore. Whakareatia ngā taha e rua o te whārite ki te x+12.

$$24+x=0.4\left(x+12\right)$$

Whakamahia te āhuatanga tohatoha hei whakarea te 0.4 ki te x+12.

$$24+x=0.4x+4.8$$

Tangohia te 0.4x mai i ngā taha e rua.

$$24+x-0.4x=4.8$$

Pahekotia te x me -0.4x, ka 0.6x.

$$24+0.6x=4.8$$

Tangohia te 24 mai i ngā taha e rua.

$$0.6x=4.8-24$$

Tangohia te 24 i te 4.8, ka -19.2.

$$0.6x=-19.2$$

Whakawehea ngā taha e rua ki te 0.6.

$$x=\frac{-19.2}{0.6}$$

Whakarohaina te \frac{-19.2}{0.6} mā te whakarea i te taurunga me te tauraro ki te 10.

$$x=\frac{-192}{6}$$

Whakawehea te -192 ki te 6, kia riro ko -32.

$$x=-32$$