Whakaoti mō x
x = -\frac{10}{7} = -1\frac{3}{7} \approx -1.428571429
Graph
Tohaina
Kua tāruatia ki te papatopenga
20x-3+6x=5x-3-30
Whakareatia te 5 ki te 4, ka 20.
26x-3=5x-3-30
Pahekotia te 20x me 6x, ka 26x.
26x-3=5x-33
Tangohia te 30 i te -3, ka -33.
26x-3-5x=-33
Tangohia te 5x mai i ngā taha e rua.
21x-3=-33
Pahekotia te 26x me -5x, ka 21x.
21x=-33+3
Me tāpiri te 3 ki ngā taha e rua.
21x=-30
Tāpirihia te -33 ki te 3, ka -30.
x=\frac{-30}{21}
Whakawehea ngā taha e rua ki te 21.
x=-\frac{10}{7}
Whakahekea te hautanga \frac{-30}{21} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 3.
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