Whakaoti mō v
v=7
Tohaina
Kua tāruatia ki te papatopenga
-3v+7+9v=49
Me tāpiri te 9v ki ngā taha e rua.
6v+7=49
Pahekotia te -3v me 9v, ka 6v.
6v=49-7
Tangohia te 7 mai i ngā taha e rua.
6v=42
Tangohia te 7 i te 49, ka 42.
v=\frac{42}{6}
Whakawehea ngā taha e rua ki te 6.
v=7
Whakawehea te 42 ki te 6, kia riro ko 7.
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