Whakaoti i te 7x+3.5*(10-x)=53

$$7x+3.5 \times (10-x)=53$$

Whakaoti mō x

$$x = \frac{36}{7} = 5\frac{1}{7} \approx 5.142857143$$

Ngā Upane mō te Whakaoti Whārite Rārangi

Whakamahia te āhuatanga tohatoha hei whakarea te 3.5 ki te 10-x.

$$7x+35-3.5x=53$$

Pahekotia te 7x me -3.5x, ka 3.5x.

$$3.5x+35=53$$

Tangohia te 35 mai i ngā taha e rua.

$$3.5x=53-35$$

Tangohia te 35 i te 53, ka 18.

$$3.5x=18$$

Whakawehea ngā taha e rua ki te 3.5.

$$x=\frac{18}{3.5}$$

Whakarohaina te \frac{18}{3.5} mā te whakarea i te taurunga me te tauraro ki te 10.

$$x=\frac{180}{35}$$

Whakahekea te hautanga \frac{180}{35} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 5.

$$x=\frac{36}{7}$$