Whakaoti i te (2x-4)*5=8

$$(2x-4) \times 5=8$$

Whakaoti mō x

$$x = \frac{14}{5} = 2\frac{4}{5} = 2.8$$

Ngā Upane mō te Whakaoti Whārite Rārangi

Whakawehea ngā taha e rua ki te 5.

$$2x-4=\frac{8}{5}$$

Me tāpiri te 4 ki ngā taha e rua.

$$2x=\frac{8}{5}+4$$

Me tahuri te 4 ki te hautau \frac{20}{5}.

$$2x=\frac{8}{5}+\frac{20}{5}$$

Tā te mea he rite te tauraro o \frac{8}{5} me \frac{20}{5}, me tāpiri rāua mā te tāpiri i ō raua taurunga.

$$2x=\frac{8+20}{5}$$

Tāpirihia te 8 ki te 20, ka 28.

$$2x=\frac{28}{5}$$

Whakawehea ngā taha e rua ki te 2.

$$x=\frac{\frac{28}{5}}{2}$$

Tuhia te \frac{\frac{28}{5}}{2} hei hautanga kotahi.

$$x=\frac{28}{5\times 2}$$

Whakareatia te 5 ki te 2, ka 10.

$$x=\frac{28}{10}$$

Whakahekea te hautanga \frac{28}{10} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 2.

$$x=\frac{14}{5}$$