Whakaoti mō x
x=-5
Graph
Tohaina
Kua tāruatia ki te papatopenga
-2x+5=15
Pahekotia te -3x me x, ka -2x.
-2x=15-5
Tangohia te 5 mai i ngā taha e rua.
-2x=10
Tangohia te 5 i te 15, ka 10.
x=\frac{10}{-2}
Whakawehea ngā taha e rua ki te -2.
x=-5
Whakawehea te 10 ki te -2, kia riro ko -5.
Ngā Tauira
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