Whakaoti i te 2*1x-6*45=3*15-4*3x

$$2 \cdot 1 x - 6 \cdot 45 = 3 \cdot 15 - 4 \cdot 3 x$$

Whakaoti mō x

$$x = \frac{45}{2} = 22\frac{1}{2} = 22.5$$

Ngā Upane mō te Whakaoti Whārite Rārangi

Whakareatia te 2 ki te 1, ka 2.

$$2x-6\times 45=3\times 15-4\times 3x$$

Whakareatia te 6 ki te 45, ka 270.

$$2x-270=3\times 15-4\times 3x$$

Whakareatia te 3 ki te 15, ka 45.

$$2x-270=45-4\times 3x$$

Whakareatia te 4 ki te 3, ka 12.

$$2x-270=45-12x$$

Me tāpiri te 12x ki ngā taha e rua.

$$2x-270+12x=45$$

Pahekotia te 2x me 12x, ka 14x.

$$14x-270=45$$

Me tāpiri te 270 ki ngā taha e rua.

$$14x=45+270$$

Tāpirihia te 45 ki te 270, ka 315.

$$14x=315$$

Whakawehea ngā taha e rua ki te 14.

$$x=\frac{315}{14}$$

Whakahekea te hautanga \frac{315}{14} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 7.

$$x=\frac{45}{2}$$