Whakaoti i te +(-21/2)+(+1/2)-(-13/7)

$$+ ( - 2 \frac { 1 } { 2 } ) + ( + \frac { 1 } { 2 } ) - ( - 1 \frac { 3 } { 7 } )$$

Aromātai

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

Ngā Upane Otinga

Whakareatia te 2 ki te 2, ka 4.

$$-\frac{4+1}{2}+\frac{1}{2}-\left(-\frac{1\times 7+3}{7}\right)$$

Tāpirihia te 4 ki te 1, ka 5.

$$-\frac{5}{2}+\frac{1}{2}-\left(-\frac{1\times 7+3}{7}\right)$$

Tā te mea he rite te tauraro o -\frac{5}{2} me \frac{1}{2}, me tāpiri rāua mā te tāpiri i ō raua taurunga.

$$\frac{-5+1}{2}-\left(-\frac{1\times 7+3}{7}\right)$$

Tāpirihia te -5 ki te 1, ka -4.

$$\frac{-4}{2}-\left(-\frac{1\times 7+3}{7}\right)$$

Whakawehea te -4 ki te 2, kia riro ko -2.

$$-2-\left(-\frac{1\times 7+3}{7}\right)$$

Whakareatia te 1 ki te 7, ka 7.

$$-2-\left(-\frac{7+3}{7}\right)$$

Tāpirihia te 7 ki te 3, ka 10.

$$-2-\left(-\frac{10}{7}\right)$$

Ko te tauaro o -\frac{10}{7} ko \frac{10}{7}.

$$-2+\frac{10}{7}$$

Me tahuri te -2 ki te hautau -\frac{14}{7}.

$$-\frac{14}{7}+\frac{10}{7}$$

Tā te mea he rite te tauraro o -\frac{14}{7} me \frac{10}{7}, me tāpiri rāua mā te tāpiri i ō raua taurunga.

$$\frac{-14+10}{7}$$

Tāpirihia te -14 ki te 10, ka -4.

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

Tauwehe

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