При каких значениях аргумента:
1) значение f(x)=[tex] \frac{9}{x+5} [/tex]=3
2) значение g(x)=[tex] \frac{7x+1}{4} [/tex] +2 =11
3) значение f(x)=[tex] \frac{5}{x+3} [/tex] + [tex] \frac{2}{3} [/tex] =1

[tex]1) x+5 = 9/3 =\ \textgreater \ x = 9/3 - 5 = -2 [/tex]
[tex]2) (7x+1) / 4 = 9 =\ \textgreater \ 7x+1=36 =\ \textgreater \ 7x = 35 =\ \textgreater \ x = 5[/tex]
[tex]3) 5/(x+3) = 1/3 =\ \textgreater \ x+3 = 5 : 1/3 =\ \textgreater \ x+3 = 15 =\ \textgreater \ x = 12[/tex]