Whakaoti mō x
x=\frac{2}{13}\approx 0.153846154
Graph
Tohaina
Kua tāruatia ki te papatopenga
\frac{1}{2}x-2-7x=-3
Tangohia te 7x mai i ngā taha e rua.
-\frac{13}{2}x-2=-3
Pahekotia te \frac{1}{2}x me -7x, ka -\frac{13}{2}x.
-\frac{13}{2}x=-3+2
Me tāpiri te 2 ki ngā taha e rua.
-\frac{13}{2}x=-1
Tāpirihia te -3 ki te 2, ka -1.
x=-\left(-\frac{2}{13}\right)
Me whakarea ngā taha e rua ki te -\frac{2}{13}, te tau utu o -\frac{13}{2}.
x=\frac{2}{13}
Whakareatia te -1 ki te -\frac{2}{13}, ka \frac{2}{13}.
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