Whakaoti mō x
x=-8
Graph
Tohaina
Kua tāruatia ki te papatopenga
5.6-0.7x+x=8\times 0.4
Whakamahia te āhuatanga tohatoha hei whakarea te 0.7 ki te 8-x.
5.6+0.3x=8\times 0.4
Pahekotia te -0.7x me x, ka 0.3x.
5.6+0.3x=3.2
Whakareatia te 8 ki te 0.4, ka 3.2.
0.3x=3.2-5.6
Tangohia te 5.6 mai i ngā taha e rua.
0.3x=-2.4
Tangohia te 5.6 i te 3.2, ka -2.4.
x=\frac{-2.4}{0.3}
Whakawehea ngā taha e rua ki te 0.3.
x=\frac{-24}{3}
Whakarohaina te \frac{-2.4}{0.3} mā te whakarea i te taurunga me te tauraro ki te 10.
x=-8
Whakawehea te -24 ki te 3, kia riro ko -8.
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