Whakaoti i te 1/3+(-1/5)-1+2/3

$$\frac { 1 } { 3 } + ( - \frac { 1 } { 5 } ) - 1 + \frac { 2 } { 3 }$$

Aromātai

$$-\frac{1}{5}=-0.2$$

Ngā Upane Otinga

Ko te maha noa iti rawa atu o 3 me 5 ko 15. Me tahuri \frac{1}{3} me \frac{1}{5} ki te hautau me te tautūnga 15.

$$\frac{5}{15}-\frac{3}{15}-1+\frac{2}{3}$$

Tā te mea he rite te tauraro o \frac{5}{15} me \frac{3}{15}, me tango rāua mā te tango i ō raua taurunga.

$$\frac{5-3}{15}-1+\frac{2}{3}$$

Tangohia te 3 i te 5, ka 2.

$$\frac{2}{15}-1+\frac{2}{3}$$

Me tahuri te 1 ki te hautau \frac{15}{15}.

$$\frac{2}{15}-\frac{15}{15}+\frac{2}{3}$$

Tā te mea he rite te tauraro o \frac{2}{15} me \frac{15}{15}, me tango rāua mā te tango i ō raua taurunga.

$$\frac{2-15}{15}+\frac{2}{3}$$

Tangohia te 15 i te 2, ka -13.

$$-\frac{13}{15}+\frac{2}{3}$$

Ko te maha noa iti rawa atu o 15 me 3 ko 15. Me tahuri -\frac{13}{15} me \frac{2}{3} ki te hautau me te tautūnga 15.

$$-\frac{13}{15}+\frac{10}{15}$$

Tā te mea he rite te tauraro o -\frac{13}{15} me \frac{10}{15}, me tāpiri rāua mā te tāpiri i ō raua taurunga.

$$\frac{-13+10}{15}$$

Tāpirihia te -13 ki te 10, ka -3.

$$\frac{-3}{15}$$

Whakahekea te hautanga \frac{-3}{15} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 3.

$$-\frac{1}{5}$$

Tauwehe

$$-\frac{1}{5} = -0.2$$