реши уравнение 8(х-4.5)-6*(х+3.5)=23

8(х-4.5)-6*(х+3.5)=23,8х - 36 - 6х - 21 = 23,8х - 6х = 23 + 36 + 21,2х = 80,х = 40,проверка:8*(40-4,5) - 6*(40+3,5) = 23,8*35,5 - 6*43,5 = 23,284 - 261 = 23,23 = 23