Whakaoti mō x
x = -\frac{57}{7} = -8\frac{1}{7} \approx -8.142857143
Graph
Tohaina
Kua tāruatia ki te papatopenga
x+11+20x=-160
Me tāpiri te 20x ki ngā taha e rua.
21x+11=-160
Pahekotia te x me 20x, ka 21x.
21x=-160-11
Tangohia te 11 mai i ngā taha e rua.
21x=-171
Tangohia te 11 i te -160, ka -171.
x=\frac{-171}{21}
Whakawehea ngā taha e rua ki te 21.
x=-\frac{57}{7}
Whakahekea te hautanga \frac{-171}{21} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 3.
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