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Ngā Raru Ōrite mai i te Rapu Tukutuku

Tohaina

\frac{3}{30}-\frac{20}{30}
Ko te maha noa iti rawa atu o 10 me 3 ko 30. Me tahuri \frac{1}{10} me \frac{2}{3} ki te hautau me te tautūnga 30.
\frac{3-20}{30}
Tā te mea he rite te tauraro o \frac{3}{30} me \frac{20}{30}, me tango rāua mā te tango i ō raua taurunga.
-\frac{17}{30}
Tangohia te 20 i te 3, ka -17.