( 1 - 15 \% ) \times 3
Aromātai
\frac{51}{20}=2.55
Tauwehe
\frac{3 \cdot 17}{2 ^ {2} \cdot 5} = 2\frac{11}{20} = 2.55
Tohaina
Kua tāruatia ki te papatopenga
\left(1-\frac{3}{20}\right)\times 3
Whakahekea te hautanga \frac{15}{100} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 5.
\left(\frac{20}{20}-\frac{3}{20}\right)\times 3
Me tahuri te 1 ki te hautau \frac{20}{20}.
\frac{20-3}{20}\times 3
Tā te mea he rite te tauraro o \frac{20}{20} me \frac{3}{20}, me tango rāua mā te tango i ō raua taurunga.
\frac{17}{20}\times 3
Tangohia te 3 i te 20, ka 17.
\frac{17\times 3}{20}
Tuhia te \frac{17}{20}\times 3 hei hautanga kotahi.
\frac{51}{20}
Whakareatia te 17 ki te 3, ka 51.
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