Whakaoti mō x
x=-5
Graph
Tohaina
Kua tāruatia ki te papatopenga
\frac{1}{5}x-9-2x=0
Tangohia te 2x mai i ngā taha e rua.
-\frac{9}{5}x-9=0
Pahekotia te \frac{1}{5}x me -2x, ka -\frac{9}{5}x.
-\frac{9}{5}x=9
Me tāpiri te 9 ki ngā taha e rua. Ko te tau i tāpiria he kore ka hua koia tonu.
x=9\left(-\frac{5}{9}\right)
Me whakarea ngā taha e rua ki te -\frac{5}{9}, te tau utu o -\frac{9}{5}.
x=-5
Me whakakore te 9 me te 9.
Ngā Tauira
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