Whakaoti mō x
x=3.9
Graph
Tohaina
Kua tāruatia ki te papatopenga
8x-3.2=28
Pahekotia te 7x me x, ka 8x.
8x=28+3.2
Me tāpiri te 3.2 ki ngā taha e rua.
8x=31.2
Tāpirihia te 28 ki te 3.2, ka 31.2.
x=\frac{31.2}{8}
Whakawehea ngā taha e rua ki te 8.
x=\frac{312}{80}
Whakarohaina te \frac{31.2}{8} mā te whakarea i te taurunga me te tauraro ki te 10.
x=\frac{39}{10}
Whakahekea te hautanga \frac{312}{80} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 8.
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