Whakaoti mō a
a=18
Tohaina
Kua tāruatia ki te papatopenga
\frac{1}{2}a-7=2
Whakawhitihia ngā taha kia puta ki te taha mauī ngā kīanga tau taurangi katoa.
\frac{1}{2}a=2+7
Me tāpiri te 7 ki ngā taha e rua.
\frac{1}{2}a=9
Tāpirihia te 2 ki te 7, ka 9.
a=9\times 2
Me whakarea ngā taha e rua ki te 2, te tau utu o \frac{1}{2}.
a=18
Whakareatia te 9 ki te 2, ka 18.
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