Whakaoti i te 1/2h+33/4+9=21

$$\frac { 1 } { 2 } h + 3 \frac { 3 } { 4 } + 9 = 21$$

Whakaoti mō h

$$h = \frac{33}{2} = 16\frac{1}{2} = 16.5$$

Ngā Upane mō te Whakaoti Whārite Rārangi

Me whakarea ngā taha e rua o te whārite ki te 4, arā, te tauraro pātahi he tino iti rawa te kitea o 2,4.

$$2h+3\times 4+3+36=84$$

Whakareatia te 3 ki te 4, ka 12.

$$2h+12+3+36=84$$

Tāpirihia te 12 ki te 3, ka 15.

$$2h+15+36=84$$

Tāpirihia te 15 ki te 36, ka 51.

$$2h+51=84$$

Tangohia te 51 mai i ngā taha e rua.

$$2h=84-51$$

Tangohia te 51 i te 84, ka 33.

$$2h=33$$

Whakawehea ngā taha e rua ki te 2.

$$h=\frac{33}{2}$$