Whakaoti mō x, m
x=-7
m=0
Tohaina
Kua tāruatia ki te papatopenga
3x+2-4x=9
Whakaarohia te whārite tuatahi. Tangohia te 4x mai i ngā taha e rua.
-x+2=9
Pahekotia te 3x me -4x, ka -x.
-x=9-2
Tangohia te 2 mai i ngā taha e rua.
-x=7
Tangohia te 2 i te 9, ka 7.
x=-7
Whakawehea ngā taha e rua ki te -1.
-2m+4=4+12m
Whakaarohia te whārite tuarua. Pahekotia te m me -3m, ka -2m.
-2m+4-12m=4
Tangohia te 12m mai i ngā taha e rua.
-14m+4=4
Pahekotia te -2m me -12m, ka -14m.
-14m=4-4
Tangohia te 4 mai i ngā taha e rua.
-14m=0
Tangohia te 4 i te 4, ka 0.
m=0
Whakawehea ngā taha e rua ki te -14. Ko te kore i whakawehea ki te tau ehara te kore ka hua ko te kore.
x=-7 m=0
Kua oti te pūnaha te whakatau.
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