Whakaoti i te 5-x/30=1/20

$$\frac{ 5-x }{ 30 } = \frac{ 1 }{ 20 }$$

Whakaoti mō x

$$x = \frac{7}{2} = 3\frac{1}{2} = 3.5$$

Ngā Upane mō te Whakaoti Whārite Rārangi

Me whakarea ngā taha e rua ki te 30.

$$5-x=\frac{1}{20}\times 30$$

Whakareatia te \frac{1}{20} ki te 30, ka \frac{30}{20}.

$$5-x=\frac{30}{20}$$

Whakahekea te hautanga \frac{30}{20} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 10.

$$5-x=\frac{3}{2}$$

Tangohia te 5 mai i ngā taha e rua.

$$-x=\frac{3}{2}-5$$

Me tahuri te 5 ki te hautau \frac{10}{2}.

$$-x=\frac{3}{2}-\frac{10}{2}$$

Tā te mea he rite te tauraro o \frac{3}{2} me \frac{10}{2}, me tango rāua mā te tango i ō raua taurunga.

$$-x=\frac{3-10}{2}$$

Tangohia te 10 i te 3, ka -7.

$$-x=-\frac{7}{2}$$

Me whakarea ngā taha e rua ki te -1.

$$x=\frac{7}{2}$$