Whakaoti mō x
x=15
Graph
Tohaina
Kua tāruatia ki te papatopenga
3x+4.5-4.5x=-18
Tangohia te 4.5x mai i ngā taha e rua.
-1.5x+4.5=-18
Pahekotia te 3x me -4.5x, ka -1.5x.
-1.5x=-18-4.5
Tangohia te 4.5 mai i ngā taha e rua.
-1.5x=-22.5
Tangohia te 4.5 i te -18, ka -22.5.
x=\frac{-22.5}{-1.5}
Whakawehea ngā taha e rua ki te -1.5.
x=\frac{-225}{-15}
Whakarohaina te \frac{-22.5}{-1.5} mā te whakarea i te taurunga me te tauraro ki te 10.
x=15
Whakawehea te -225 ki te -15, kia riro ko 15.
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