Whakaoti mō x
x=2.8
Graph
Tohaina
Kua tāruatia ki te papatopenga
3.2-x=\frac{3.2}{8}
Whakareatia te 0.8 ki te 4, ka 3.2.
3.2-x=\frac{32}{80}
Whakarohaina te \frac{3.2}{8} mā te whakarea i te taurunga me te tauraro ki te 10.
3.2-x=\frac{2}{5}
Whakahekea te hautanga \frac{32}{80} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 16.
-x=\frac{2}{5}-3.2
Tangohia te 3.2 mai i ngā taha e rua.
-x=\frac{2}{5}-\frac{16}{5}
Me tahuri ki tau ā-ira 3.2 ki te hautau \frac{32}{10}. Whakahekea te hautanga \frac{32}{10} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 2.
-x=\frac{2-16}{5}
Tā te mea he rite te tauraro o \frac{2}{5} me \frac{16}{5}, me tango rāua mā te tango i ō raua taurunga.
-x=-\frac{14}{5}
Tangohia te 16 i te 2, ka -14.
x=\frac{14}{5}
Me whakarea ngā taha e rua ki te -1.
Ngā Tauira
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