Whakaoti i te 800*0.1(t-130)=-400t

$$800 \times 0.1 ( t - 130 ) = - 400 t$$

Whakaoti mō t

$$t = \frac{65}{3} = 21\frac{2}{3} \approx 21.666666667$$

Ngā Upane mō te Whakaoti Whārite Rārangi

Whakareatia te 800 ki te 0.1, ka 80.

$$80\left(t-130\right)=-400t$$

Whakamahia te āhuatanga tohatoha hei whakarea te 80 ki te t-130.

$$80t-10400=-400t$$

Me tāpiri te 400t ki ngā taha e rua.

$$80t-10400+400t=0$$

Pahekotia te 80t me 400t, ka 480t.

$$480t-10400=0$$

Me tāpiri te 10400 ki ngā taha e rua. Ko te tau i tāpiria he kore ka hua koia tonu.

$$480t=10400$$

Whakawehea ngā taha e rua ki te 480.

$$t=\frac{10400}{480}$$

Whakahekea te hautanga \frac{10400}{480} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 160.

$$t=\frac{65}{3}$$