Whakaoti i te 3/10x-2/5=2

$$\frac { 3 } { 10 } x - \frac { 2 } { 5 } = 2$$

Whakaoti mō x

$$x=8$$

Ngā Upane mō te Whakaoti Whārite Rārangi

Me tāpiri te \frac{2}{5} ki ngā taha e rua.

$$\frac{3}{10}x=2+\frac{2}{5}$$

Me tahuri te 2 ki te hautau \frac{10}{5}.

$$\frac{3}{10}x=\frac{10}{5}+\frac{2}{5}$$

Tā te mea he rite te tauraro o \frac{10}{5} me \frac{2}{5}, me tāpiri rāua mā te tāpiri i ō raua taurunga.

$$\frac{3}{10}x=\frac{10+2}{5}$$

Tāpirihia te 10 ki te 2, ka 12.

$$\frac{3}{10}x=\frac{12}{5}$$

Me whakarea ngā taha e rua ki te \frac{10}{3}, te tau utu o \frac{3}{10}.

$$x=\frac{12}{5}\times \frac{10}{3}$$

Me whakarea te \frac{12}{5} ki te \frac{10}{3} mā te whakarea taurunga ki te taurunga me te tauraro ki te tauraro.

$$x=\frac{12\times 10}{5\times 3}$$

Mahia ngā whakarea i roto i te hautanga \frac{12\times 10}{5\times 3}.

$$x=\frac{120}{15}$$

Whakawehea te 120 ki te 15, kia riro ko 8.

$$x=8$$