Whakaoti i te r-3/4=2r

$$\frac{r-3}{4}=2r$$

Whakaoti mō r

$$r=-\frac{3}{7}\approx -0.428571429$$

Ngā Upane mō te Whakaoti Whārite Rārangi

Whakareatia ngā taha e rua o te whārite ki te 4.

$$r-3=8r$$

Tangohia te 8r mai i ngā taha e rua.

$$r-3-8r=0$$

Pahekotia te r me -8r, ka -7r.

$$-7r-3=0$$

Me tāpiri te 3 ki ngā taha e rua. Ko te tau i tāpiria he kore ka hua koia tonu.

$$-7r=3$$

Whakawehea ngā taha e rua ki te -7.

$$r=\frac{3}{-7}$$

Ka taea te hautanga \frac{3}{-7} te tuhi anō ko -\frac{3}{7} mā te tango i te tohu tōraro.

$$r=-\frac{3}{7}$$