Whakaoti mō t
t=\frac{c-20}{10}
Whakaoti mō c
c=10\left(t+2\right)
Tohaina
Kua tāruatia ki te papatopenga
10t+20=c
Whakawhitihia ngā taha kia puta ki te taha mauī ngā kīanga tau taurangi katoa.
10t=c-20
Tangohia te 20 mai i ngā taha e rua.
\frac{10t}{10}=\frac{c-20}{10}
Whakawehea ngā taha e rua ki te 10.
t=\frac{c-20}{10}
Mā te whakawehe ki te 10 ka wetekia te whakareanga ki te 10.
t=\frac{c}{10}-2
Whakawehe c-20 ki te 10.
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