Whakaoti i te 72*21/3-3.72*21/3=

$$72 \cdot 2 \frac { 1 } { 3 } - 3.72 \cdot 2 \frac { 1 } { 3 } =$$

Aromātai

$$159.32$$

Ngā Upane Otinga

Whakareatia te 2 ki te 3, ka 6.

$$72\times \frac{6+1}{3}-3.72\times \frac{2\times 3+1}{3}$$

Tāpirihia te 6 ki te 1, ka 7.

$$72\times \frac{7}{3}-3.72\times \frac{2\times 3+1}{3}$$

Tuhia te 72\times \frac{7}{3} hei hautanga kotahi.

$$\frac{72\times 7}{3}-3.72\times \frac{2\times 3+1}{3}$$

Whakareatia te 72 ki te 7, ka 504.

$$\frac{504}{3}-3.72\times \frac{2\times 3+1}{3}$$

Whakawehea te 504 ki te 3, kia riro ko 168.

$$168-3.72\times \frac{2\times 3+1}{3}$$

Whakareatia te 2 ki te 3, ka 6.

$$168-3.72\times \frac{6+1}{3}$$

Tāpirihia te 6 ki te 1, ka 7.

$$168-3.72\times \frac{7}{3}$$

Me tahuri ki tau ā-ira 3.72 ki te hautau \frac{372}{100}. Whakahekea te hautanga \frac{372}{100} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 4.

$$168-\frac{93}{25}\times \frac{7}{3}$$

Me whakarea te \frac{93}{25} ki te \frac{7}{3} mā te whakarea taurunga ki te taurunga me te tauraro ki te tauraro.

$$168-\frac{93\times 7}{25\times 3}$$

Mahia ngā whakarea i roto i te hautanga \frac{93\times 7}{25\times 3}.

$$168-\frac{651}{75}$$

Whakahekea te hautanga \frac{651}{75} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 3.

$$168-\frac{217}{25}$$

Me tahuri te 168 ki te hautau \frac{4200}{25}.

$$\frac{4200}{25}-\frac{217}{25}$$

Tā te mea he rite te tauraro o \frac{4200}{25} me \frac{217}{25}, me tango rāua mā te tango i ō raua taurunga.

$$\frac{4200-217}{25}$$

Tangohia te 217 i te 4200, ka 3983.

$$\frac{3983}{25}$$

Tauwehe

$$\frac{7 \cdot 569}{5 ^ {2}} = 159\frac{8}{25} = 159.32$$