Whakaoti mō x
x=\frac{12}{19}\approx 0.631578947
Graph
Tohaina
Kua tāruatia ki te papatopenga
\frac{4}{\frac{4x}{x}+\frac{8}{x}}=0.24
Hei tāpiri, hei tango kīanga rānei, me whakaroha ērā kia rite ā rātou tauraro. Whakareatia 4 ki te \frac{x}{x}.
\frac{4}{\frac{4x+8}{x}}=0.24
Tā te mea he rite te tauraro o \frac{4x}{x} me \frac{8}{x}, me tāpiri rāua mā te tāpiri i ō raua taurunga.
\frac{4x}{4x+8}=0.24
Tē taea kia ōrite te tāupe x ki 0 nā te kore tautuhi i te whakawehenga mā te kore. Whakawehe 4 ki te \frac{4x+8}{x} mā te whakarea 4 ki te tau huripoki o \frac{4x+8}{x}.
\frac{4x}{4\left(x+2\right)}=0.24
Me whakatauwehe ngā kīanga kāore anō i whakatauwehea i roto o \frac{4x}{4x+8}.
\frac{x}{x+2}=0.24
Me whakakore tahi te 4 i te taurunga me te tauraro.
x=0.24\left(x+2\right)
Tē taea kia ōrite te tāupe x ki -2 nā te kore tautuhi i te whakawehenga mā te kore. Whakareatia ngā taha e rua o te whārite ki te x+2.
x=0.24x+0.48
Whakamahia te āhuatanga tohatoha hei whakarea te 0.24 ki te x+2.
x-0.24x=0.48
Tangohia te 0.24x mai i ngā taha e rua.
0.76x=0.48
Pahekotia te x me -0.24x, ka 0.76x.
x=\frac{0.48}{0.76}
Whakawehea ngā taha e rua ki te 0.76.
x=\frac{48}{76}
Whakarohaina te \frac{0.48}{0.76} mā te whakarea i te taurunga me te tauraro ki te 100.
x=\frac{12}{19}
Whakahekea te hautanga \frac{48}{76} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 4.
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