Whakaoti mō x
x=-\frac{1}{4}=-0.25
Graph
Tohaina
Kua tāruatia ki te papatopenga
7x+3=2x-7x
Whakareatia te 1 ki te 3, ka 3.
7x+3=-5x
Pahekotia te 2x me -7x, ka -5x.
7x+3+5x=0
Me tāpiri te 5x ki ngā taha e rua.
12x+3=0
Pahekotia te 7x me 5x, ka 12x.
12x=-3
Tangohia te 3 mai i ngā taha e rua. Ko te tau i tango i te kore ka hua ko tōna korenga.
x=\frac{-3}{12}
Whakawehea ngā taha e rua ki te 12.
x=-\frac{1}{4}
Whakahekea te hautanga \frac{-3}{12} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 3.
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