Найдите сумму (разность) подобных одночленов:
- \({\largeа)}\ 3a+5a=\ \)
- \({\largeб)}\ {-}3ab^2+3ab^2=\ \)
- \({\largeв)}\ b^3+1{,}4b^3=\ \)
- \({\largeг)}\ {-}2ab+ab=\ \)
- \({\largeд)}\ 3a-4a=\ \)
- \({\largeе)}\ {-}3ab^2-3ab^2=\ \)
- \({\largeж)}\ 3b^3-4b^3=\ \)
- \({\largeз)}\ 2ab-2ab=\ \)
