Whakaoti mō x
x=\frac{3}{14}\approx 0.214285714
Graph
Tohaina
Kua tāruatia ki te papatopenga
4x-0.8-1.2x=-0.2
Tangohia te 1.2x mai i ngā taha e rua.
2.8x-0.8=-0.2
Pahekotia te 4x me -1.2x, ka 2.8x.
2.8x=-0.2+0.8
Me tāpiri te 0.8 ki ngā taha e rua.
2.8x=0.6
Tāpirihia te -0.2 ki te 0.8, ka 0.6.
x=\frac{0.6}{2.8}
Whakawehea ngā taha e rua ki te 2.8.
x=\frac{6}{28}
Whakarohaina te \frac{0.6}{2.8} mā te whakarea i te taurunga me te tauraro ki te 10.
x=\frac{3}{14}
Whakahekea te hautanga \frac{6}{28} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 2.
Ngā Tauira
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