Whakaoti i te 17*3+13*x+13*0.8+5*6+5*0.8=180

$$17 \times 3+13 \times x+13 \times 0.8+5 \times 6+5 \times 0.8=180$$

Whakaoti mō x

$$x = \frac{423}{65} = 6\frac{33}{65} \approx 6.507692308$$

Ngā Upane mō te Whakaoti Whārite Rārangi

Whakareatia te 17 ki te 3, ka 51. Whakareatia te 5 ki te 6, ka 30.

$$51+13x+13\times 0.8+30+5\times 0.8=180$$

Whakareatia te 13 ki te 0.8, ka 10.4.

$$51+13x+10.4+30+5\times 0.8=180$$

Tāpirihia te 51 ki te 10.4, ka 61.4.

$$61.4+13x+30+5\times 0.8=180$$

Tāpirihia te 61.4 ki te 30, ka 91.4.

$$91.4+13x+5\times 0.8=180$$

Whakareatia te 5 ki te 0.8, ka 4.

$$91.4+13x+4=180$$

Tāpirihia te 91.4 ki te 4, ka 95.4.

$$95.4+13x=180$$

Tangohia te 95.4 mai i ngā taha e rua.

$$13x=180-95.4$$

Tangohia te 95.4 i te 180, ka 84.6.

$$13x=84.6$$

Whakawehea ngā taha e rua ki te 13.

$$x=\frac{84.6}{13}$$

Whakarohaina te \frac{84.6}{13} mā te whakarea i te taurunga me te tauraro ki te 10.

$$x=\frac{846}{130}$$

Whakahekea te hautanga \frac{846}{130} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 2.

$$x=\frac{423}{65}$$