Whakaoti mō x
x = -\frac{5}{2} = -2\frac{1}{2} = -2.5
Graph
Tohaina
Kua tāruatia ki te papatopenga
2-x-7-\left(-3x\right)=5+6x
Hei kimi i te tauaro o 7-3x, kimihia te tauaro o ia taurangi.
2-x-7+3x=5+6x
Ko te tauaro o -3x ko 3x.
-5-x+3x=5+6x
Tangohia te 7 i te 2, ka -5.
-5+2x=5+6x
Pahekotia te -x me 3x, ka 2x.
-5+2x-6x=5
Tangohia te 6x mai i ngā taha e rua.
-5-4x=5
Pahekotia te 2x me -6x, ka -4x.
-4x=5+5
Me tāpiri te 5 ki ngā taha e rua.
-4x=10
Tāpirihia te 5 ki te 5, ka 10.
x=\frac{10}{-4}
Whakawehea ngā taha e rua ki te -4.
x=-\frac{5}{2}
Whakahekea te hautanga \frac{10}{-4} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 2.
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