Whakaoti mō n
n = \frac{291}{7} = 41\frac{4}{7} \approx 41.571428571
Tohaina
Kua tāruatia ki te papatopenga
7n-91=28\times 7+4
Whakareatia ngā taha e rua o te whārite ki te 7.
7n-91=196+4
Whakareatia te 28 ki te 7, ka 196.
7n-91=200
Tāpirihia te 196 ki te 4, ka 200.
7n=200+91
Me tāpiri te 91 ki ngā taha e rua.
7n=291
Tāpirihia te 200 ki te 91, ka 291.
n=\frac{291}{7}
Whakawehea ngā taha e rua ki te 7.
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