Whakaoti mō x
x=\frac{7}{150}\approx 0.046666667
Graph
Tohaina
Kua tāruatia ki te papatopenga
520x=70x+3\times 7
Whakareatia te 2 ki te 260, ka 520.
520x=70x+21
Whakareatia te 3 ki te 7, ka 21.
520x-70x=21
Tangohia te 70x mai i ngā taha e rua.
450x=21
Pahekotia te 520x me -70x, ka 450x.
x=\frac{21}{450}
Whakawehea ngā taha e rua ki te 450.
x=\frac{7}{150}
Whakahekea te hautanga \frac{21}{450} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 3.
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