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Whakaoti mō x
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Tohaina

-16.5+3.5x=-30x-38
Whakamahia te āhuatanga tohatoha hei whakarea te -4 ki te 7.5x+9.5.
-16.5+3.5x+30x=-38
Me tāpiri te 30x ki ngā taha e rua.
-16.5+33.5x=-38
Pahekotia te 3.5x me 30x, ka 33.5x.
33.5x=-38+16.5
Me tāpiri te 16.5 ki ngā taha e rua.
33.5x=-21.5
Tāpirihia te -38 ki te 16.5, ka -21.5.
x=\frac{-21.5}{33.5}
Whakawehea ngā taha e rua ki te 33.5.
x=\frac{-215}{335}
Whakarohaina te \frac{-21.5}{33.5} mā te whakarea i te taurunga me te tauraro ki te 10.
x=-\frac{43}{67}
Whakahekea te hautanga \frac{-215}{335} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 5.