200*(x+71)=54000 900*(16-c)=5400 400*(x-12)=3600 - вопрос №52615702007154000900165400400123600 от mishakkkk 01.03.2020 03:07

Question

Математика: 200*(x+71)=54000 900*(16-c)=5400 400*(x-12)=3600 решить уравнение!

mishakkkk · Answer

200х+14200=54000200х=54000-14200200х=39800х=39800/200х=199900*16-900с=540014400-900с=540014400-5400=900с9000=900сс=9000/900с=10400х-4800=3600400х=3600+4800400х=8400х=8400/400х=21...