Whakaoti i te 6.72*21/3-3.72*21/3=

$$6.72 \cdot 2 \frac { 1 } { 3 } - 3.72 \cdot 2 \frac { 1 } { 3 } =$$

Aromātai

$$7$$

Ngā Upane Otinga

Whakareatia te 2 ki te 3, ka 6.

$$6.72\times \frac{6+1}{3}-3.72\times \frac{2\times 3+1}{3}$$

Tāpirihia te 6 ki te 1, ka 7.

$$6.72\times \frac{7}{3}-3.72\times \frac{2\times 3+1}{3}$$

Me tahuri ki tau ā-ira 6.72 ki te hautau \frac{672}{100}. Whakahekea te hautanga \frac{672}{100} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 4.

$$\frac{168}{25}\times \frac{7}{3}-3.72\times \frac{2\times 3+1}{3}$$

Me whakarea te \frac{168}{25} ki te \frac{7}{3} mā te whakarea taurunga ki te taurunga me te tauraro ki te tauraro.

$$\frac{168\times 7}{25\times 3}-3.72\times \frac{2\times 3+1}{3}$$

Mahia ngā whakarea i roto i te hautanga \frac{168\times 7}{25\times 3}.

$$\frac{1176}{75}-3.72\times \frac{2\times 3+1}{3}$$

Whakahekea te hautanga \frac{1176}{75} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 3.

$$\frac{392}{25}-3.72\times \frac{2\times 3+1}{3}$$

Whakareatia te 2 ki te 3, ka 6.

$$\frac{392}{25}-3.72\times \frac{6+1}{3}$$

Tāpirihia te 6 ki te 1, ka 7.

$$\frac{392}{25}-3.72\times \frac{7}{3}$$

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.

$$\frac{392}{25}-\frac{93}{25}\times \frac{7}{3}$$

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

$$\frac{392}{25}-\frac{93\times 7}{25\times 3}$$

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

$$\frac{392}{25}-\frac{651}{75}$$

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

$$\frac{392}{25}-\frac{217}{25}$$

Tā te mea he rite te tauraro o \frac{392}{25} me \frac{217}{25}, me tango rāua mā te tango i ō raua taurunga.

$$\frac{392-217}{25}$$

Tangohia te 217 i te 392, ka 175.

$$\frac{175}{25}$$

Whakawehea te 175 ki te 25, kia riro ko 7.

$$7$$

Tauwehe

$$7$$