Whakaoti mō r
r=34
Tohaina
Kua tāruatia ki te papatopenga
\frac{1}{2}r=9+8
Me tāpiri te 8 ki ngā taha e rua.
\frac{1}{2}r=17
Tāpirihia te 9 ki te 8, ka 17.
r=17\times 2
Me whakarea ngā taha e rua ki te 2, te tau utu o \frac{1}{2}.
r=34
Whakareatia te 17 ki te 2, ka 34.
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