Ответ:
а) \(5a+1.4a+(12.4+2.6+3.14+2.4)=6.4a+20.54\).
б) \(8.2b+1.7b+(13.4+6+5.6+7.28+2.3)=9.9b+34.58\).
Ответ: а) \(6,4a+20,54\); б) \(9,9b+34,58\).
а) \(5a+1.4a+(12.4+2.6+3.14+2.4)=6.4a+20.54\).
б) \(8.2b+1.7b+(13.4+6+5.6+7.28+2.3)=9.9b+34.58\).
Ответ: а) \(6,4a+20,54\); б) \(9,9b+34,58\).