Whakaoti i te 0.12(y-8)+0.16y=0.18y-0.03(40)

$$0.12 ( y - 8 ) + 0.16 y = 0.18 y - 0.03 ( 40 )$$

Whakaoti mō y

$$y=-2.4$$

Ngā Upane mō te Whakaoti Whārite Rārangi

Whakamahia te āhuatanga tohatoha hei whakarea te 0.12 ki te y-8.

$$0.12y-0.96+0.16y=0.18y-0.03\times 40$$

Pahekotia te 0.12y me 0.16y, ka 0.28y.

$$0.28y-0.96=0.18y-0.03\times 40$$

Whakareatia te 0.03 ki te 40, ka 1.2.

$$0.28y-0.96=0.18y-1.2$$

Tangohia te 0.18y mai i ngā taha e rua.

$$0.28y-0.96-0.18y=-1.2$$

Pahekotia te 0.28y me -0.18y, ka 0.1y.

$$0.1y-0.96=-1.2$$

Me tāpiri te 0.96 ki ngā taha e rua.

$$0.1y=-1.2+0.96$$

Tāpirihia te -1.2 ki te 0.96, ka -0.24.

$$0.1y=-0.24$$

Whakawehea ngā taha e rua ki te 0.1.

$$y=\frac{-0.24}{0.1}$$

Whakarohaina te \frac{-0.24}{0.1} mā te whakarea i te taurunga me te tauraro ki te 100.

$$y=\frac{-24}{10}$$

Whakahekea te hautanga \frac{-24}{10} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 2.

$$y=-\frac{12}{5}$$