Odpowiedź:
[tex]\frac{5}{x - 3} + \frac{y - 2}{y + 4} = 3 / * 7\\\frac{7}{x - 3} + \frac{2 - y}{y + 4} = 9 * ( - 5)[/tex] x ≠ 3 i y ≠ 4
[tex]\frac{35}{x - 3} + \frac{7 y - 14}{y + 4} = 21\\\frac{- 35}{x - 3} + \frac{- 10 + 5 y}{y + 4} = - 45[/tex] dodajemy stronami
[tex]\frac{12 y - 24}{y + 4} = - 24[/tex] / * ( y + 4 )
12 y - 24 = - 24 y - 96
36 y = - 72 / : 36
y = - 2
------------
[tex]\frac{5}{x - 3} + \frac{ - 4}{2} = 3[/tex]
[tex]\frac{5}{x - 3} = 5[/tex]
x - 3 = 1
x = 4
-----------
Odp. x = 4, y = - 2
=======================
Szczegółowe wyjaśnienie:
[tex]x\ne3\\y\ne-4[/tex]
[tex]\frac{5}{x-3}+\frac{y-2}{y+4}=3\\\frac{7}{x-3}+\frac{2-y}{y+4}=9\\ -----------\\\frac{5}{x-3}+\frac{y-2}{y+4}=3 \\ \frac{7}{x-3}-\frac{y-2}{y+4}=9\\-------------------------\\\frac{y-2}{y+4}=3 -\frac{5}{x-3}\\\frac{y-2}{y+4}=\frac{7}{x-3}-9\\3 -\frac{5}{x-3}=\frac{7}{x-3}-9\\\frac{7}{x-3}+\frac{5}{x-3}=3+9\\\frac{12}{x-3}=12\\12=12x-36\\12x=48\\x=4\\\frac{5}{4-3} +\frac{y-2}{y+4}=3\\\frac{y-2}{y+4}=-2\\y-2=-2y-8\\3y=-6\\y=-2\\[/tex]
x=4
y=-2
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Odpowiedź:
[tex]\frac{5}{x - 3} + \frac{y - 2}{y + 4} = 3 / * 7\\\frac{7}{x - 3} + \frac{2 - y}{y + 4} = 9 * ( - 5)[/tex] x ≠ 3 i y ≠ 4
[tex]\frac{35}{x - 3} + \frac{7 y - 14}{y + 4} = 21\\\frac{- 35}{x - 3} + \frac{- 10 + 5 y}{y + 4} = - 45[/tex] dodajemy stronami
[tex]\frac{12 y - 24}{y + 4} = - 24[/tex] / * ( y + 4 )
12 y - 24 = - 24 y - 96
36 y = - 72 / : 36
y = - 2
------------
[tex]\frac{5}{x - 3} + \frac{ - 4}{2} = 3[/tex]
[tex]\frac{5}{x - 3} = 5[/tex]
x - 3 = 1
x = 4
-----------
Odp. x = 4, y = - 2
=======================
Szczegółowe wyjaśnienie:
Odpowiedź:
[tex]x\ne3\\y\ne-4[/tex]
[tex]\frac{5}{x-3}+\frac{y-2}{y+4}=3\\\frac{7}{x-3}+\frac{2-y}{y+4}=9\\ -----------\\\frac{5}{x-3}+\frac{y-2}{y+4}=3 \\ \frac{7}{x-3}-\frac{y-2}{y+4}=9\\-------------------------\\\frac{y-2}{y+4}=3 -\frac{5}{x-3}\\\frac{y-2}{y+4}=\frac{7}{x-3}-9\\3 -\frac{5}{x-3}=\frac{7}{x-3}-9\\\frac{7}{x-3}+\frac{5}{x-3}=3+9\\\frac{12}{x-3}=12\\12=12x-36\\12x=48\\x=4\\\frac{5}{4-3} +\frac{y-2}{y+4}=3\\\frac{y-2}{y+4}=-2\\y-2=-2y-8\\3y=-6\\y=-2\\[/tex]
x=4
y=-2
Szczegółowe wyjaśnienie: