Whakaoti i te 0.85(x+45)*8=(x+45-35)*12

$$0.85(x+45) \times 8=(x+45-35) \times 12$$

Whakaoti mō x

$$x = \frac{465}{13} = 35\frac{10}{13} \approx 35.769230769$$

Ngā Upane mō te Whakaoti Whārite Rārangi

Whakareatia te 0.85 ki te 8, ka 6.8.

$$6.8\left(x+45\right)=\left(x+45-35\right)\times 12$$

Whakamahia te āhuatanga tohatoha hei whakarea te 6.8 ki te x+45.

$$6.8x+306=\left(x+45-35\right)\times 12$$

Tangohia te 35 i te 45, ka 10.

$$6.8x+306=\left(x+10\right)\times 12$$

Whakamahia te āhuatanga tohatoha hei whakarea te x+10 ki te 12.

$$6.8x+306=12x+120$$

Tangohia te 12x mai i ngā taha e rua.

$$6.8x+306-12x=120$$

Pahekotia te 6.8x me -12x, ka -5.2x.

$$-5.2x+306=120$$

Tangohia te 306 mai i ngā taha e rua.

$$-5.2x=120-306$$

Tangohia te 306 i te 120, ka -186.

$$-5.2x=-186$$

Whakawehea ngā taha e rua ki te -5.2.

$$x=\frac{-186}{-5.2}$$

Whakarohaina te \frac{-186}{-5.2} mā te whakarea i te taurunga me te tauraro ki te 10.

$$x=\frac{-1860}{-52}$$

Whakahekea te hautanga \frac{-1860}{-52} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te -4.

$$x=\frac{465}{13}$$