Whakaoti i te 4000+100(x-12)=6400+(x-12)

$$4000 + 100 ( x - 12 ) = 6400 + ( x - 12 )$$

Whakaoti mō x

$$x = \frac{1196}{33} = 36\frac{8}{33} \approx 36.242424242$$

Ngā Upane mō te Whakaoti Whārite Rārangi

Whakamahia te āhuatanga tohatoha hei whakarea te 100 ki te x-12.

$$4000+100x-1200=6400+x-12$$

Tangohia te 1200 i te 4000, ka 2800.

$$2800+100x=6400+x-12$$

Tangohia te 12 i te 6400, ka 6388.

$$2800+100x=6388+x$$

Tangohia te x mai i ngā taha e rua.

$$2800+100x-x=6388$$

Pahekotia te 100x me -x, ka 99x.

$$2800+99x=6388$$

Tangohia te 2800 mai i ngā taha e rua.

$$99x=6388-2800$$

Tangohia te 2800 i te 6388, ka 3588.

$$99x=3588$$

Whakawehea ngā taha e rua ki te 99.

$$x=\frac{3588}{99}$$

Whakahekea te hautanga \frac{3588}{99} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 3.

$$x=\frac{1196}{33}$$