Whakaoti mō x
x=-8
Graph
Tohaina
Kua tāruatia ki te papatopenga
3x+4=20+5x
Tāpirihia te -1 ki te 5, ka 4.
3x+4-5x=20
Tangohia te 5x mai i ngā taha e rua.
-2x+4=20
Pahekotia te 3x me -5x, ka -2x.
-2x=20-4
Tangohia te 4 mai i ngā taha e rua.
-2x=16
Tangohia te 4 i te 20, ka 16.
x=\frac{16}{-2}
Whakawehea ngā taha e rua ki te -2.
x=-8
Whakawehea te 16 ki te -2, kia riro ko -8.
Ngā Tauira
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