200*(х+71)=54000 900*(16-с)=54000 400*(х-12)=3600 - вопрос №714078220071540009001654000400123600 от Maximus20161 28.04.2021 15:58

Question

Математика: 200*(х+71)=54000 900*(16-с)=54000 400*(х-12)=3600

Maximus20161 · Answer

200 * (х + 71) = 54000х + 71 = 54000 : 200х + 71 = 270х = 270 - 71х = 199900 * (16 - с) = 5400016 - с = 54000 : 90016 - с = 60с = 16 - 60с = - 44400 * (х - 12) = 3600х - 12 = 3600 : 400х - 12 = 9х = 9 + 12х = 21...