Представьте в виде дроби:
\({\largeа)}\ 1-\frac{\vphantom{0}a}{5}-\frac{b}{4};\)
\({\largeб)}\ 12-\frac{1}{a}-\frac{1}{b};\)
\({\largeв)}\ \frac{\vphantom{^0}a-2}{2}-1-\frac{a-3}{3};\)
\({\largeг)}\ 4a-\frac{a-1}{4}-\frac{a+2}{3};\)
\({\largeд)}\ \frac{\vphantom{0}a+b}{4}-a+b;\)
\({\largeе)}\ a+b-\frac{a^2+b^2}{a}.\)