Whakaoti i te 2x-7/3=4/15

$$\frac { 2 x - 7 } { 3 } = \frac { 4 } { 15 }$$

Whakaoti mō x

$$x = \frac{39}{10} = 3\frac{9}{10} = 3.9$$

Ngā Upane mō te Whakaoti Whārite Rārangi

Me whakarea ngā taha e rua ki te 3.

$$2x-7=\frac{4}{15}\times 3$$

Tuhia te \frac{4}{15}\times 3 hei hautanga kotahi.

$$2x-7=\frac{4\times 3}{15}$$

Whakareatia te 4 ki te 3, ka 12.

$$2x-7=\frac{12}{15}$$

Whakahekea te hautanga \frac{12}{15} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 3.

$$2x-7=\frac{4}{5}$$

Me tāpiri te 7 ki ngā taha e rua.

$$2x=\frac{4}{5}+7$$

Me tahuri te 7 ki te hautau \frac{35}{5}.

$$2x=\frac{4}{5}+\frac{35}{5}$$

Tā te mea he rite te tauraro o \frac{4}{5} me \frac{35}{5}, me tāpiri rāua mā te tāpiri i ō raua taurunga.

$$2x=\frac{4+35}{5}$$

Tāpirihia te 4 ki te 35, ka 39.

$$2x=\frac{39}{5}$$

Whakawehea ngā taha e rua ki te 2.

$$x=\frac{\frac{39}{5}}{2}$$

Tuhia te \frac{\frac{39}{5}}{2} hei hautanga kotahi.

$$x=\frac{39}{5\times 2}$$

Whakareatia te 5 ki te 2, ka 10.

$$x=\frac{39}{10}$$