Whakaoti mō x
x=-300
Graph
Tohaina
Kua tāruatia ki te papatopenga
-\frac{2}{5}x=120
Pahekotia te \frac{3}{5}x me -x, ka -\frac{2}{5}x.
x=120\left(-\frac{5}{2}\right)
Me whakarea ngā taha e rua ki te -\frac{5}{2}, te tau utu o -\frac{2}{5}.
x=\frac{120\left(-5\right)}{2}
Tuhia te 120\left(-\frac{5}{2}\right) hei hautanga kotahi.
x=\frac{-600}{2}
Whakareatia te 120 ki te -5, ka -600.
x=-300
Whakawehea te -600 ki te 2, kia riro ko -300.
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