Whakaoti mō x
x = -\frac{33}{17} = -1\frac{16}{17} \approx -1.941176471
Graph
Tohaina
Kua tāruatia ki te papatopenga
-9+10x=60x+90+x
Whakamahia te āhuatanga tohatoha hei whakarea te 3 ki te 20x+30.
-9+10x=61x+90
Pahekotia te 60x me x, ka 61x.
-9+10x-61x=90
Tangohia te 61x mai i ngā taha e rua.
-9-51x=90
Pahekotia te 10x me -61x, ka -51x.
-51x=90+9
Me tāpiri te 9 ki ngā taha e rua.
-51x=99
Tāpirihia te 90 ki te 9, ka 99.
x=\frac{99}{-51}
Whakawehea ngā taha e rua ki te -51.
x=-\frac{33}{17}
Whakahekea te hautanga \frac{99}{-51} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 3.
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