Whakaoti i te 3x+9=12/-9

$$3 x + 9 = 12 / - 9$$

Whakaoti mō x

$$x = -\frac{31}{9} = -3\frac{4}{9} \approx -3.444444444$$

Ngā Upane mō te Whakaoti Whārite Rārangi

Whakahekea te hautanga \frac{12}{-9} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 3.

$$3x+9=-\frac{4}{3}$$

Tangohia te 9 mai i ngā taha e rua.

$$3x=-\frac{4}{3}-9$$

Me tahuri te 9 ki te hautau \frac{27}{3}.

$$3x=-\frac{4}{3}-\frac{27}{3}$$

Tā te mea he rite te tauraro o -\frac{4}{3} me \frac{27}{3}, me tango rāua mā te tango i ō raua taurunga.

$$3x=\frac{-4-27}{3}$$

Tangohia te 27 i te -4, ka -31.

$$3x=-\frac{31}{3}$$

Whakawehea ngā taha e rua ki te 3.

$$x=\frac{-\frac{31}{3}}{3}$$

Tuhia te \frac{-\frac{31}{3}}{3} hei hautanga kotahi.

$$x=\frac{-31}{3\times 3}$$

Whakareatia te 3 ki te 3, ka 9.

$$x=\frac{-31}{9}$$

Ka taea te hautanga \frac{-31}{9} te tuhi anō ko -\frac{31}{9} mā te tango i te tohu tōraro.

$$x=-\frac{31}{9}$$