Whakaoti i te 3/7(2)-5/14(4)=

$$\frac { 3 } { 7 } ( 2 ) - \frac { 5 } { 14 } ( 4 ) =$$

Aromātai

$$-\frac{4}{7}\approx -0.571428571$$

Ngā Upane Otinga

Tuhia te \frac{3}{7}\times 2 hei hautanga kotahi.

$$\frac{3\times 2}{7}-\frac{5}{14}\times 4$$

Whakareatia te 3 ki te 2, ka 6.

$$\frac{6}{7}-\frac{5}{14}\times 4$$

Tuhia te \frac{5}{14}\times 4 hei hautanga kotahi.

$$\frac{6}{7}-\frac{5\times 4}{14}$$

Whakareatia te 5 ki te 4, ka 20.

$$\frac{6}{7}-\frac{20}{14}$$

Whakahekea te hautanga \frac{20}{14} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 2.

$$\frac{6}{7}-\frac{10}{7}$$

Tā te mea he rite te tauraro o \frac{6}{7} me \frac{10}{7}, me tango rāua mā te tango i ō raua taurunga.

$$\frac{6-10}{7}$$

Tangohia te 10 i te 6, ka -4.

$$-\frac{4}{7}$$

Tauwehe

$$-\frac{4}{7} = -0.5714285714285714$$