Whakaoti mō x
x=-\frac{10}{19}\approx -0.526315789
Graph
Tohaina
Kua tāruatia ki te papatopenga
0.3x+4x-2=0.5x-4
Whakamahia te āhuatanga tohatoha hei whakarea te 2 ki te 2x-1.
4.3x-2=0.5x-4
Pahekotia te 0.3x me 4x, ka 4.3x.
4.3x-2-0.5x=-4
Tangohia te 0.5x mai i ngā taha e rua.
3.8x-2=-4
Pahekotia te 4.3x me -0.5x, ka 3.8x.
3.8x=-4+2
Me tāpiri te 2 ki ngā taha e rua.
3.8x=-2
Tāpirihia te -4 ki te 2, ka -2.
x=\frac{-2}{3.8}
Whakawehea ngā taha e rua ki te 3.8.
x=\frac{-20}{38}
Whakarohaina te \frac{-2}{3.8} mā te whakarea i te taurunga me te tauraro ki te 10.
x=-\frac{10}{19}
Whakahekea te hautanga \frac{-20}{38} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 2.
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